Increased complexity in interstellar chemistry: detection and chemical modeling of ethyl formate and n-propyl cyanide in Sagittarius B2(N)

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Volume 499 / No 1 (May III 2009)

A&A, 499 1 (2009) 215-232

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Table 2:

Transitions of the *gauche*-conformer of ethyl formate observed with the IRAM 30 m telescope toward Sgr B2(N). The horizontal lines mark discontinuities in the observed frequency coverage. Only the transitions associated with a modeled line stronger than 20 mK are listed.
N^a	Transition^b	Frequency	Unc.^c	$E_{\rm l}$ ^d	$S\mu^2$	$\sigma^e$	Comments
		(MHz)	(kHz)	(K)	(D²)	(mK)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
1	14_{7, 8}-13_{7, 7}	99 252.267	9	140	43.9	19	Blend with a(CH₂OH)₂ and C₂H₅CN
2	14_{7, 7}-13_{7, 6}	99 252.460	9	140	43.9	19	Blend with a(CH₂OH)₂ and C₂H₅CN
3	16_1,16-15_1,15	104 834.473	10	132	66.3	25	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1 and U-line
4	16_0,16-15_0,15	104 848.839	10	132	66.3	25	Blend with C₂H₃CN, $\varv_{11}$ = 1/ $\varv_{15}$ = 1
5	15_{9, 7}-14_{9, 6} $^\star$	106 216.238	9	154	40.2	25	Blend with C₂H₃CN, $\varv_{11}$ = 1/ $\varv_{15}$ = 1
7	15_{8, 8}-14_{8, 7} $^\star$	106 286.532	9	149	44.9	25	Blend with U-line
9	15_{7, 9}-14_{7, 8}	106 400.093	9	144	49.1	25	Blend with U-line
10	15_{7, 8}-14_{7, 7}	106 400.593	9	144	49.1	25	Blend with U-line
11	15_2,13-14_2,12	107 933.484	100	131	60.9	46	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1, C₃H₇CN, and U-line
12	15_4,11-14_4,10	108 497.732	10	134	58.3	20	Blend with C₂H₅CN and U-line
13	16_2,15-15_2,14	108 858.373	9	135	65.2	20	Blend with ¹³CN in absorption, CH₃CH₃CO, $\varv_t$ = 1, and U-line
14	16_1,15-15_1,14	109 206.256	100	135	65.3	29	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1 and U-line
15	15_3,12-14_3,11	110 117.142	10	133	60.4	24	Blend with U-lines
16	17_1,17-16_1,16	111 255.183	100	137	70.5	35	Blend with CH₃OH
17	17_0,17-16_0,16	111 263.830	100	137	70.5	35	Blend with C₂H₃CN, $\varv_{11}$ = 1/ $\varv_{15}$ = 1 and ¹³CH₃CH₂CN
18	16_3,14-15_3,13	112 186.512	8	137	64.2	42	Blend with CH₂¹³CHCN
19	16_{10, 6}-15_{10, 5} $^\star$	113 276.855	9	165	40.8	28	Blend with CH₃OCH₃
21	16_{9, 8}-15_{9, 7} $^\star$	113 332.031	9	159	45.8	28	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1 and CH₂¹³CHCN
23	16_{8, 9}-15_{8, 8} $^\star$	113 419.845	9	154	50.2	28	Blend with C₂H₃CN, $\varv_{11}$ = 1
25	46_10,37-46_9,38	113 560.008	23	488	62.8	28	Strong CN in absorption
26	16_7,10-15_{7, 9}	113 560.122	9	150	54.1	28	Strong CN in absorption
27	16_{7, 9}-15_{7, 8}	113 561.324	9	150	54.1	28	Strong CN in absorption
28	16_6,11-15_6,10	113 783.618	9	146	57.5	34	Blend with U-line
29	16_6,10-15_{6, 9}	113 810.530	9	146	57.5	34	Blend with C₂H₃CN, $\varv_{15}$ = 1
30	16_4,13-15_4,12	113 866.411	9	139	62.7	34	Blend with a-C₂H₅OCHO and U-line
31	16_5,12-15_5,11	114 054.354	9	142	60.4	33	Blend with C₂H₃CN, $\varv_{15}$ = 1
32	16_2,14-15_2,13	114 356.265	100	137	64.9	33	Blend with CH₃CH₃CO and U-line
33	16_5,11-15_5,10	114 420.852	100	142	60.4	37	Blend with C₂H₃CN, $\varv_{11}$ = 1/ $\varv_{15}$ = 1
34	42_6,36-42_5,37	115 318.413	41	411	44.6	60	Strong CO
35	17_2,16-16_2,15	115 319.089	9	140	69.4	60	Strong CO
36	17_1,16-16_1,15	115 551.954	100	140	69.4	60	Blend with C₂H₃CN
37	22_1,21-21_2,20	147 415.492	100	171	37.3	31	Blend with CH₃CH₃CO, $\varv_t$ = 1 and CH₃¹³CN, $\varv_8$ = 1
38	9_{7, 3}- 8_{6, 2} $^\star$	147 431.313	18	117	14.5	31	Blend with C₂H₅OH and CH₃CN, $\varv_8$ = 1
40	9_{7, 3}- 8_{6, 3} $^\star$	147 431.321	18	117	0.9	31	Blend with C₂H₅OH and CH₃CN, $\varv_8$ = 1
42	22_2,21-21_2,20	147 454.440	100	171	90.3	31	Blend with a(CH₂OH)₂, CH₃¹³CN, $\varv_8$ = 1, and CH₃OCH₃
43	22_1,21-21_1,20	147 479.064	100	171	90.3	31	Blend with CH₃CN, $\varv_8$ = 1 and ¹³CH₃CH₂CN
44	22_2,21-21_1,20	147 517.966	100	171	37.3	31	Blend with CH₃¹³CN, $\varv_8$ = 1 and CH₃CN, $\varv_8$ = 1
45	10_{7, 4}- 9_{6, 3} $^\star$	154 495.310	18	120	14.6	112	Blend with C₂H₅CN
47	10_{7, 4}- 9_{6, 4} $^\star$	154 495.348	18	120	0.9	112	Blend with C₂H₅CN
49	23_9,15-22_9,14	163 354.580	7	205	81.5	38	Group possibly detected, partial blend with c-C₂H₄O, uncertain
							baseline
50	23_9,14-22_9,13	163 355.083	7	205	81.5	38	Group possibly detected, partial blend with c-C₂H₄O, uncertain
							baseline
51	23_3,20-22_3,19	163 550.748	100	184	93.0	38	Blend with CH₃OCHO, $\varv_{{\rm t}}$ = 1 and CH₂CH¹³CN
52	23_8,16-22_8,15	163 648.730	7	199	84.6	38	Blend with C₃H₇CN and NH₂¹³CHO
53	23_8,15-22_8,14	163 658.516	7	199	84.6	38	Blend with C₃H₇CN, uncertain baseline
54	24_5,19-23_5,18	176 014.876	9	196	96.4	365	Blend with CH₃OCHO, CH₂CH¹³CN, and HNCO, $\varv_5$ = 1
55	19_6,14-18_5,13	202 061.374	15	160	13.8	138	Blend with CH₃¹³CN
56	15_{8, 8}-14_{7, 7} $^\star$	202 643.074	17	144	17.5	108	Blend with CH₃CN, $\varv_8$ = 1 and CH₃¹³CN, $\varv_8$ = 1
58	15_{8, 8}-14_{7, 8} $^\star$	202 643.365	17	144	1.1	108	Blend with CH₃CN, $\varv_8$ = 1 and CH₃¹³CN, $\varv_8$ = 1
60	30_2,28-29_3,27	202 805.197	7	241	47.3	138	Blend with C₂H₅CN and CH₃¹³CN, $\varv_8$ = 1
61	30_3,28-29_3,27	202 824.924	100	241	122.7	138	Strong CH₃CN, $\varv_8$ = 1
62	30_2,28-29_2,27	202 837.051	100	241	122.6	138	Strong CH₃CN, $\varv_8$ = 1
63	45_9,37-44_10,34	202 856.742	41	463	10.5	138	Blend with CH₃CN, $\varv_8$ = 1
64	30_3,28-29_2,27	202 856.967	7	241	47.3	138	Blend with CH₃CN, $\varv_8$ = 1
65	65_8,58-65_7,59	202 857.921	214	828	52.8	138	Blend with CH₃CN, $\varv_8$ = 1
66	17_7,11-16_6,10	203 524.096	16	151	15.9	161	Blend with CH₃CN, $\varv_8$ = 2
67	17_7,10-16_6,10	203 528.806	16	151	1.1	161	Blend with CH₃CN, $\varv_8$ = 2
68	17_7,11-16_6,11	203 574.259	16	151	1.1	161	Blend with CH₃CN, $\varv_8$ = 2
69	17_7,10-16_6,11	203 578.970	16	151	15.9	161	Blend with CH₃CN, $\varv_8$ = 2 and C₂H₅CN, $\varv_{20}$ = 1
70	29_5,25-28_5,24	204 412.101	7	240	116.8	316	Blend with ¹³CH₃CH₂CN and U-lines
71	19_6,14-18_5,14	204 417.969	16	160	1.2	316	Blend with ¹³CH₃CH₂CN and U-lines
72	59_17,43-59_16,44	205 092.813	17	774	72.3	100	Strong C₂H₅CN, CH₃OCH₃, and CH₃¹³CH₂CN
73	28_5,23-27_5,22	205 093.048	8	232	113.5	100	Strong C₂H₅CN, CH₃OCH₃, and CH₃¹³CH₂CN
74	31_1,30-30_2,29	205 095.436	11	245	57.4	100	Strong CH₃¹³CH₂CN and CH₃OCH₃
75	31_2,30-30_2,29	205 095.823	11	245	127.9	100	Strong CH₃¹³CH₂CN and CH₃OCH₃
76	31_1,30-30_1,29	205 096.091	11	245	127.9	100	Strong CH₃¹³CH₂CN and CH₃OCH₃
77	31_2,30-30_1,29	205 096.478	11	245	57.4	100	Strong CH₃¹³CH₂CN and CH₃OCH₃
78	29_18,11-28_18,10 $^\star$	205 308.386	8	332	74.6	100	Strong SO₂
80	29_17,12-28_17,11 $^\star$	205 313.243	8	321	79.7	100	Strong SO₂ and U-line?
82	54_14,40-53_15,39 $^\star$	205 317.032	22	650	15.2	100	Strong SO₂ and U-line?
84	29_19,11-28_19,10	205 317.035	9	343	69.3	100	Strong SO₂ and U-line?
85	29_16,13-28_16,12 $^\star$	205 334.455	8	311	84.4	100	Strong CH₃¹³CH₂CN
87	29_{20, 9}-28_{20, 8} $^\star$	205 337.037	9	355	63.6	100	Strong CH₃¹³CH₂CN
89	29_{21, 8}-28_{21, 7} $^\star$	205 366.726	10	368	57.7	100	Blend with C₂H₅¹³CN
91	29_15,14-28_15,13 $^\star$	205 375.865	8	301	88.9	100	Strong C₂H₅CN
93	29_14,15-28_14,14 $^\star$	205 442.791	7	292	93.1	100	Blend with CH₃¹³CH₂CN and C₂H₅¹³CN
95	29_13,17-28_13,16 $^\star$	205 542.814	7	284	97.0	271	Blend with U-line
97	29_12,18-28_12,17 $^\star$	205 687.132	7	276	100.6	271	Blend with C₂H₃CN, $\varv_{11}$ = 1, uncertain baseline
99	29_{27, 2}-28_{27, 1} $^\star$	205 690.300	20	456	16.2	271	Blend with C₂H₃CN, $\varv_{11}$ = 1, uncertain baseline
101	29_11,19-28_11,18 $^\star$	205 893.033	7	269	103.9	271	Blend with C₂H₅¹³CN
103	29_10,20-28_10,19	206 188.338	7	263	106.9	280	Blend with SO and ¹³CH₂CHCN
104	29_10,19-28_10,18	206 190.002	7	263	106.9	280	Blend with SO and ¹³CH₂CHCN
105	29_4,25-28_4,24	206 280.705	100	240	117.1	280	Blend with C₂H₅CN and C₂H₅CN, $\varv_{20}$ = 1
106	29_9,21-28_9,20	206 614.666	7	257	109.6	106	Strong C₂H₅CN and CH₃OCHO
107	29_9,20-28_9,19	206 639.557	7	257	109.6	106	Blend with U-lines
108	56_17,40-56_16,40	206 650.461	14	715	2.7	106	Blend with C₂H₅CN
109	56_17,39-56_16,40	206 650.601	14	715	67.2	106	Blend with C₂H₅CN
110	56_17,40-56_16,41	206 652.471	14	715	67.2	106	Blend with C₂H₅CN
111	56_17,39-56_16,41	206 652.612	14	715	2.7	106	Blend with C₂H₅CN
112	30_3,27-29_4,26	206 654.482	7	246	38.8	106	Blend with C₂H₅CN
113	29_6,24-28_6,23	206 929.917	8	244	115.8	117	Strong C₂H₅CN, $\varv_{20}$ = 1 and C₂H₅CN
114	30_4,27-29_4,26	206 996.130	100	246	121.8	117	Blend with OCS, $\varv_2$ = 1 and NH₂¹³CHO
115	28_5,24-27_4,23	207 002.205	100	230	24.1	117	Blend with OCS, $\varv_2$ = 1 and NH₂¹³CHO
116	30_3,27-29_3,26	207 175.063	100	246	121.8	117	Blend with U-line
117	29_8,22-28_8,21	207 183.249	7	252	112.1	117	Blend with U-line
118	12_{10, 2}-11_{9, 3} $^\star$	207 240.583	16	141	21.0	117	Blend with CH₃OCHO and U-line
120	12_{10, 2}-11_{9, 2} $^\star$	207 240.583	16	141	1.2	117	Blend with CH₃OCHO and U-line
122	32_0,32-31_0,31 $^\star$	207 408.086	100	249	133.2	282	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
124	32_0,32-31_1,31 $^\star$	207 408.141	17	249	67.2	282	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
126	29_8,21-28_8,20	207 451.586	7	252	112.1	282	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1 and C₂H₅OH
127	30_4,27-29_3,26	207 516.619	7	246	38.8	282	Blend with CH₃CH₃CO, $\varv_t$ = 1 and U-line
128	29_7,23-28_7,22	207 601.807	8	247	114.2	282	Strong NH₂CHO, $\varv_{12}$ = 1 and C₂H₃CN
129	20_6,15-19_5,14	207 703.938	15	166	13.7	282	Blend with CH₃OCH₃
130	14_{9, 6}-13_{8, 5} $^\star$	208 513.304	16	144	19.3	168	Blend with C₂H₅OH and C₂H₃CN
132	14_{9, 5}-13_{8, 6} $^\star$	208 513.306	16	144	19.3	168	Blend with C₂H₅OH and C₂H₃CN
134	31_2,29-30_3,28	209 205.202	8	251	49.5	58	Strong H₂CS and C₂H₃CN, $\varv_{15}$ = 1
135	31_3,29-30_3,28	209 217.484	100	251	126.8	58	Strong C₂H₃CN, $\varv_{15}$ = 1, CH₃OCHO, and HC₃N
136	31_2,29-30_2,28	209 225.073	100	251	126.8	58	Strong CH₃OCHO and HC₃N
137	31_3,29-30_2,28	209 237.276	8	251	49.5	58	Strong HC₃N
138	74_18,56-74_17,57 $^\star$	209 239.716	197	1125	97.1	58	Strong HC₃N
140	29_7,22-28_7,21	209 426.660	9	248	114.3	58	Strong CH₃OCH₃ and CH₃CH₃CO
141	16_{8, 9}-15_{7, 8} $^\star$	209 662.326	16	150	17.7	45	Strong C₂H₃CN, $\varv_{11}$ = 1, HC¹³CCN, $\varv_7$ = 2, and HCC¹³CN, $\varv_7$ = 2
143	16_{8, 9}-15_{7, 9} $^\star$	209 663.117	16	150	1.2	45	Strong C₂H₃CN, $\varv_{11}$ = 1, HC¹³CCN, $\varv_7$ = 2, and HCC¹³CN, $\varv_7$ = 2
145	18_7,12-17_6,11	210 394.041	16	157	16.0	64	Blend with C₂H₅OH and CH₃OCHO
146	18_7,11-17_6,12	210 507.031	16	157	16.0	64	Strong HC₃N, $\varv_7$ = 2
147	41_17,24-41_16,25 $^\star$	210 945.438	10	465	43.1	37	Strong NH₂¹³CHO and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
149	41_17,25-41_16,26 $^\star$	210 945.438	10	465	43.1	37	Strong NH₂¹³CHO and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
151	30_5,26-29_5,25	210 948.194	7	250	121.0	37	Strong NH₂¹³CHO and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
152	29_5,25-28_4,24	211 213.126	100	240	26.6	33	Strong H₂CO in absorption
153	32_1,31-31_2,30	211 492.742	12	255	59.6	33	Strong CH₃OCH₃
154	32_2,31-31_2,30	211 492.971	12	255	132.0	33	Strong CH₃OCH₃
155	32_1,31-31_1,30	211 493.129	12	255	132.0	33	Strong CH₃OCH₃
156	32_2,31-31_1,30	211 493.358	12	255	59.6	33	Strong CH₃OCH₃
157	29_5,24-28_5,23	211 817.880	100	242	117.5	47	Blend with CH₃OH, $\varv_t$ = 1 and U-line
158	18_{17, 1}-18_{16, 2} $^\star$	211 857.177	16	231	4.4	47	Blend with C₂H₃CN, $\varv_{15}$ = 1 and U-line
160	29_17,12-29_16,13 $^\star$	211 859.692	10	320	24.2	47	Blend with C₂H₃CN, $\varv_{15}$ = 1 and U-line
162	29_17,12-29_16,14 $^\star$	211 859.692	10	320	1.2	47	Blend with C₂H₃CN, $\varv_{15}$ = 1 and U-line
164	28_17,11-28_16,12 $^\star$	211 880.904	10	311	22.6	47	Blend with CH₂CH¹³CN
166	28_17,11-28_16,13 $^\star$	211 880.904	10	311	1.1	47	Blend with CH₂CH¹³CN
168	27_17,10-27_16,11 $^\star$	211 896.387	11	301	20.9	47	Strong C₂H₃CN, $\varv_{11}$ = 1 and C₂H₅OH
170	27_17,10-27_16,12 $^\star$	211 896.387	11	301	1.0	47	Strong C₂H₃CN, $\varv_{11}$ = 1 and C₂H₅OH
172	21_{17, 4}-21_{16, 5} $^\star$	211 896.595	13	251	10.4	47	Strong C₂H₃CN, $\varv_{11}$ = 1 and C₂H₅OH
174	21_{17, 4}-21_{16, 6} $^\star$	211 896.595	13	251	0.5	47	Strong C₂H₃CN, $\varv_{11}$ = 1 and C₂H₅OH
176	22_{17, 5}-22_{16, 6} $^\star$	211 905.280	13	259	12.2	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
178	22_{17, 5}-22_{16, 7} $^\star$	211 905.280	13	259	0.6	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
180	26_17,10-26_16,11 $^\star$	211 906.656	11	292	19.2	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
182	26_17,10-26_16,10	211 906.656	11	292	0.9	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
183	26_{17, 9}-26_16,10	211 906.776	100	292	19.2	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
184	23_{17, 6}-23_{16, 7} $^\star$	211 911.066	12	266	14.0	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
186	23_{17, 6}-23_{16, 8} $^\star$	211 911.066	12	266	0.7	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
188	25_{17, 8}-25_{16, 9} $^\star$	211 912.208	11	283	17.5	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
190	25_{17, 8}-25_16,10 $^\star$	211 912.208	11	283	0.9	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
192	24_{17, 8}-24_{16, 9} $^\star$	211 913.523	12	275	15.8	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
194	24_{17, 8}-24_{16, 8}	211 913.523	12	275	0.8	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
195	24_{17, 7}-24_{16, 8}	211 913.626	100	275	15.8	47	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{11}$ = 1, and U-line
196	20_6,14-19_5,15	212 146.465	17	166	13.4	36	Strong NH₂CHO, $\varv_{12}$ = 1
197	30_4,26-29_4,25	212 369.981	100	249	121.2	36	Blend with U-line, NH₂¹³CHO, $\varv_{12}$ = 1, and C₃H₇CN, uncertain
							baseline
198	30_18,12-29_18,11 $^\star$	212 385.195	8	341	80.3	36	Strong NH₂CHO, $\varv_{12}$ = 1
200	71_18,54-71_17,55	212 386.233	123	1051	91.5	36	Strong NH₂CHO, $\varv_{12}$ = 1
201	30_19,11-29_19,10 $^\star$	212 390.341	8	353	75.2	36	Strong NH₂CHO, $\varv_{12}$ = 1
203	30_17,13-29_17,12 $^\star$	212 394.782	8	331	85.2	36	Strong NH₂CHO, $\varv_{12}$ = 1
205	30_20,11-29_20,10 $^\star$	212 407.836	9	365	69.7	36	Blend with NH₂¹³CHO, $\varv_{12}$ = 1 and CH₃CH₃CO, $\varv_t$ = 1
207	30_16,14-29_16,13 $^\star$	212 422.256	8	320	89.8	36	Strong NH₂CHO
209	30_{21, 9}-29_{21, 8} $^\star$	212 435.843	9	377	64.0	36	Strong NH₂CHO
211	30_15,15-29_15,14 $^\star$	212 471.882	8	311	94.1	99	Blend with C₂H₅OH, CH₃OCHO, and C₃H₇CN
213	30_{22, 8}-29_{22, 7} $^\star$	212 472.920	10	391	58.0	99	Blend with C₂H₅OH, CH₃OCHO, and C₃H₇CN
215	30_14,17-29_14,16 $^\star$	212 549.578	7	302	98.2	99	Blend with NH₂¹³CHO and U-line
217	29_6,23-28_6,22	212 550.033	10	244	116.6	99	Blend with NH₂¹³CHO and U-line
218	30_13,17-29_13,16 $^\star$	212 663.809	7	294	102.0	99	Blend with C₂H₅OH and ¹³CH₂CHCN
220	30_12,19-29_12,18 $^\star$	212 827.135	7	286	105.4	99	Strong ¹³CH₂CHCN and NH₂CHO
222	30_{28, 3}-29_{28, 2} $^\star$	212 834.203	100	482	16.2	99	Strong ¹³CH₂CHCN and NH₂CHO
224	21_6,16-20_5,15	212 845.604	15	173	13.7	99	Blend with ¹³CH₂CHCN, uncertain baseline
225	11_{11, 1}-10_{10, 0} $^\star$	212 997.517	100	143	23.2	99	Blend with C₂H₅CN
227	11_{11, 0}-10_{10, 0} $^\star$	212 997.572	16	143	1.3	99	Blend with C₂H₅CN
229	30_11,20-29_11,19	213 059.055	7	279	108.7	48	Strong SO₂
230	30_11,19-29_11,18	213 059.228	7	279	108.7	48	Strong SO₂
231	31_3,28-30_4,27	213 169.983	7	255	41.1	48	Strong C₂H₃CN, $\varv_{11}$ = 1
232	30_10,21-29_10,20	213 390.877	7	273	111.6	48	Blend with CH₃CH₃CO, $\varv_t$ = 1, uncertain baseline
233	31_4,28-30_4,27	213 392.357	7	255	125.9	48	Blend with CH₃CH₃CO, $\varv_t$ = 1, uncertain baseline
234	30_10,20-29_10,19	213 394.012	7	273	111.6	48	Blend with CH₃CH₃CO, $\varv_t$ = 1, uncertain baseline
235	16_4,13-15_1,14	213 509.497	41	135	0.8	48	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1 and U-line
236	31_3,28-30_3,27	213 511.580	100	255	125.9	48	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1 and U-line
237	31_4,28-30_3,27	213 733.932	7	255	41.1	48	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
238	30_6,25-29_6,24	213 791.953	100	253	120.1	48	Blend with CH₃CH₃CO, $\varv_t$ = 1, C₂H₃CN, $\varv_{15}$ = 1, and U-line
239	33_0,33-32_1,32 $^\star$	213 807.575	17	259	69.4	48	Blend with C₂H₅CN
241	33_0,33-32_0,32 $^\star$	213 807.621	100	259	137.4	48	Blend with C₂H₅CN
243	30_9,22-29_9,21	213 865.943	7	267	114.2	48	Blend with C₂H₅OH and C₂H₅¹³CN
244	30_9,21-29_9,20	213 909.016	7	267	114.2	48	Blend with C₃H₇CN and ¹³CH₃OH
245	13_{10, 3}-12_{9, 4} $^\star$	214 314.472	16	145	21.1	75	Strong ¹³CH₃CN and C₂H₅¹³CN
247	13_{10, 3}-12_{9, 3} $^\star$	214 314.472	16	145	1.2	75	Strong ¹³CH₃CN and C₂H₅¹³CN
249	30_8,23-29_8,22	214 467.553	8	262	116.6	75	Blend with CH₃OCH₃
250	30_7,24-29_7,23	214 783.566	8	257	118.6	75	Strong CH₃OCHO
251	30_8,22-29_8,21	214 889.514	8	262	116.6	74	Blend with ¹³CH₂CHCN
252	31_4,27-30_5,26	214 982.375	100	260	31.4	74	Strong C₂H₅¹³CN and ¹³CH₃CN, $\varv_8$ = 1
253	15_{9, 7}-14_{8, 6} $^\star$	215 567.674	16	149	19.5	74	Strong C₂H₅CN, $\varv_{20}$ = 1 and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
255	15_{9, 7}-14_{8, 7} $^\star$	215 567.680	16	149	1.2	74	Strong C₂H₅CN, $\varv_{20}$ = 1 and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
257	32_2,30-31_3,29	215 600.637	8	261	51.8	74	Strong C₂H₅CN
258	32_3,30-31_3,29	215 608.230	100	261	131.0	74	Strong C₂H₅CN
259	32_2,30-31_2,29	215 612.952	100	261	131.0	74	Strong C₂H₅CN
260	32_3,30-31_2,29	215 620.426	8	261	51.8	74	Strong C₂H₅CN
261	36_9,27-36_6,30	215 623.049	44	336	2.1	74	Strong C₂H₅CN
262	30_5,26-29_4,25	215 880.577	100	249	29.1	55	Strong ¹³CH₃OH
263	17_8,10-16_{7, 9}	216 663.426	16	155	17.9	55	Blend with C₂H₅OH, C₃H₇CN, and U-line
264	17_{8, 9}-16_{7, 9}	216 663.574	16	155	1.2	55	Blend with C₂H₅OH, C₃H₇CN, and U-line
265	17_8,10-16_7,10	216 665.420	16	155	1.2	55	Blend with C₂H₅OH, C₃H₇CN, and U-line
266	17_{8, 9}-16_7,10	216 665.567	16	155	17.9	55	Blend with C₂H₅OH, C₃H₇CN, and U-line
267	61_4,57-61_4,58 $^\star$	216 666.695	128	715	4.3	55	Blend with C₂H₅OH, C₃H₇CN, and U-line
269	61_5,57-61_4,58 $^\star$	216 666.699	128	715	29.9	55	Blend with C₂H₅OH, C₃H₇CN, and U-line
271	19_7,13-18_6,12	217 192.379	16	163	16.1	50	Strong CH₃OCH₃
272	30_7,23-29_7,22	217 285.278	10	258	118.8	50	Blend with ¹³CN, CH₂¹³CHCN, and U-line
273	22_6,17-21_5,16	217 407.902	17	181	13.6	50	Strong HC¹³CCN, ¹³CH₃OH, HCC¹³CN, and ¹³CN in absorption
274	21_2,20-20_1,20	217 409.248	52	160	0.3	50	Strong HC¹³CCN, ¹³CH₃OH, HCC¹³CN, and ¹³CN in absorption
275	19_7,12-18_6,13	217 414.071	16	163	16.1	50	Strong HCC¹³CN and ¹³CN in absorption
276	31_5,27-30_5,26	217 441.193	100	260	125.2	50	Strong ¹³CN in absorption, CH₂¹³CHCN, and CH₂CH¹³CN
277	31_18,13-30_18,12 $^\star$	219 461.424	8	352	86.0	92	Strong C₂H₅CN
279	31_19,12-30_19,11 $^\star$	219 462.695	8	363	81.0	92	Strong C₂H₅CN
281	31_17,14-30_17,13 $^\star$	219 476.189	8	341	90.7	92	Strong NH₂CN
283	31_20,11-30_20,10 $^\star$	219 477.375	9	375	75.7	92	Strong NH₂CN
285	31_21,10-30_{21, 9} $^\star$	219 503.439	9	388	70.2	92	Strong C₂H₅CN
287	31_16,15-30_16,14 $^\star$	219 510.475	8	331	95.1	92	Strong C₂H₅CN
289	31_{22, 9}-30_{22, 8} $^\star$	219 539.304	9	401	64.4	92	Strong HNCO, $\varv_5$ = 1 and HNCO
291	31_15,16-30_15,15 $^\star$	219 569.004	8	321	99.3	92	Strong C¹⁸O
293	62_17,46-61_18,43	219 569.366	161	836	17.0	92	Strong C¹⁸O
294	62_17,45-61_18,44	219 572.725	161	836	17.0	92	Strong C¹⁸O
295	31_{24, 7}-30_{24, 6} $^\star$	219 635.627	11	429	52.0	92	Blend with C₂H₅CN, $\varv_{20}$ = 1 and CH₃CN, $\varv_4$ = 1
297	32_3,29-31_4,28	219 637.655	7	266	43.4	92	Blend with C₂H₅CN, $\varv_{20}$ = 1 and CH₃CN, $\varv_4$ = 1
298	31_14,17-30_14,16 $^\star$	219 658.346	7	312	103.2	92	Strong NH₂CN and HNCO
300	32_4,29-31_4,28	219 781.349	100	266	130.1	92	Strong HNCO, $\varv_6$ = 1 and HNCO
301	31_13,19-30_13,18 $^\star$	219 787.930	7	304	106.9	92	Strong HNCO
303	21_6,15-20_5,16	219 793.028	100	173	13.1	92	Strong HNCO
304	34_1,34-33_0,33 $^\star$	220 205.386	100	270	71.6	98	Strong HNCO, $\varv_5$ = 1 and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
306	34_1,34-33_1,33 $^\star$	220 205.400	17	270	141.6	98	Strong HNCO, $\varv_5$ = 1 and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
308	58_18,41-58_17,41 $^\star$	220 209.432	15	764	2.8	98	Strong HNCO, $\varv_5$ = 1 and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
310	58_18,41-58_17,42 $^\star$	220 209.852	15	764	68.8	98	Strong HNCO, $\varv_5$ = 1 and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
312	31_11,21-30_11,20	220 231.977	7	289	113.4	98	Blend with CH₃CN and U-line
313	31_11,20-30_11,19	220 232.321	7	289	113.4	98	Blend with CH₃CN and U-line
314	31_6,26-30_6,25	220 580.985	100	264	124.3	98	Strong CH₃¹³CN and HNCO
315	31_10,22-30_10,21	220 603.352	7	283	116.2	98	Strong CH₃CN, CH₃¹³CN, and C₂H₅OH
316	62_4,58-62_3,59 $^\star$	220 606.847	154	735	30.0	98	Strong CH₃¹³CN and C₂H₅OH
318	62_5,58-62_4,59 $^\star$	220 606.849	154	735	30.0	98	Strong CH₃¹³CN and C₂H₅OH
320	31_10,21-30_10,20	220 609.106	7	283	116.2	98	Strong CH₃¹³CN and C₂H₅OH
321	33_3,30-32_4,29	226 072.922	7	276	45.7	278	Blend with c-C₂H₄O and ¹³CH₃OH
322	33_4,30-32_4,29	226 165.300	7	276	134.3	278	Blend with CN in absorption and CH₃CH₃CO, $\varv_t$ = 1
323	33_3,30-32_3,29	226 216.618	100	276	134.3	278	Blend with CH₃CH₃CO and CN in absorption
324	33_4,30-32_3,29	226 309.069	7	276	45.8	278	Strong CN in absorption
325	32_5,28-31_4,27	226 357.720	9	270	34.1	278	Strong CN in absorption
326	32_19,13-31_19,12 $^\star$	226 534.021	8	373	86.7	278	Blend with CH₂NH
328	32_18,15-31_18,14 $^\star$	226 537.002	100	362	91.5	278	Blend with CH₂NH
330	32_20,13-31_20,12 $^\star$	226 545.568	8	385	81.6	278	Blend with CH₂NH
332	32_17,15-31_17,14 $^\star$	226 557.411	8	351	96.1	278	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
334	32_21,11-31_21,10 $^\star$	226 569.424	9	398	76.2	278	Blend with CH₃COOH, C₂H₅OH, and CN in absorption
336	32_16,16-31_16,15 $^\star$	226 599.078	8	341	100.4	278	Blend with C₂H₅¹³CN
338	35_0,35-34_1,34 $^\star$	226 601.560	18	280	73.8	278	Blend with C₂H₅¹³CN
340	35_0,35-34_0,34 $^\star$	226 601.561	18	280	145.8	278	Blend with C₂H₅¹³CN
342	32_22,10-31_{22, 9} $^\star$	226 603.850	9	411	70.6	278	Blend with C₂H₅¹³CN
344	32_15,17-31_15,16 $^\star$	226 667.222	8	332	104.5	96	Strong CN in absorption and C₂H₅OH
346	32_14,18-31_14,17 $^\star$	226 769.121	8	323	108.3	96	Strong CN in absorption
348	32_13,20-31_13,19 $^\star$	226 915.261	8	314	111.8	96	Strong CN in absorption
350	32_12,21-31_12,20 $^\star$	227 121.372	7	307	115.1	96	Blend with C₂H₅CN, uncertain baseline
352	32_11,22-31_11,21	227 412.121	7	300	118.1	85	Strong HC₃N
353	32_11,21-31_11,20	227 412.786	7	300	118.1	85	Strong HC₃N
354	31_6,25-30_6,24	227 600.701	10	265	125.4	85	Strong C₂H₅OH and NH₂CHO
355	32_10,23-31_10,22	227 826.118	8	293	120.8	85	Blend with CH₃OH
356	32_10,22-31_10,21	227 836.414	8	293	120.8	85	Blend with CH₃CH₃CO
357	22_6,16-21_5,17	227 855.315	20	180	12.7	85	Blend with HC¹³CCN, $\varv_7$ = 2, HCC¹³CN, $\varv_7$ = 2, and U-line
358	81_10,71-81_9,72 $^\star$	231 205.772	1715	1244	77.8	183	Strong ¹³CS and U-line
360	34_3,31-33_4,30	232 486.365	7	287	48.0	19	Strong C₂H₅¹³CN and C₂H₅OH
361	34_4,31-33_4,30	232 545.336	50	287	138.4	19	Blend uith C₂H₅CN and C₂H₅OH
362	34_3,31-33_3,30	232 578.686	50	287	138.4	19	Blend with CH₃¹³CH₂CN and ¹³CH₂CHCN
363	34_4,31-33_3,30	232 637.775	8	287	48.0	19	Blend with CH₃OH, $\varv_t$ = 1, CH₃CH₃CO, and ¹³CH₂CO
364	12_{12, 0}-11_{11, 1} $^\star$	232 895.717	15	153	25.4	19	Blend with C₂H₅CN and ¹³CH₃CN, $\varv_8$ = 1
366	12_{12, 0}-11_{11, 0} $^\star$	232 895.717	15	153	1.4	19	Blend with C₂H₅CN and ¹³CH₃CN, $\varv_8$ = 1
368	33_10,24-32_10,23	235 059.537	50	304	125.4	131	Strong CH₃OCHO and C₂H₅CN
369	33_10,23-32_10,22	235 077.408	8	304	125.4	131	Strong CH₃CH₃CO and C₂H₅OH
370	16_{10, 7}-15_{9, 6} $^\star$	235 511.949	15	159	21.6	131	Strong HC¹³CCN
372	16_{10, 6}-15_{9, 7} $^\star$	235 511.949	15	159	21.6	131	Strong HC¹³CCN
374	33_9,25-32_9,24	235 683.207	50	299	127.8	131	Blend with HCC¹³CN, $\varv_5$ = 1/ $\varv_7$ = 3
375	33_9,24-32_9,23	235 875.700	8	299	127.8	131	Strong ¹³CH₃OH and CH₃OCHO
376	34_4,30-33_5,29	235 952.121	100	292	39.0	131	Strong C₂H₅¹³CN, ¹³CH₃OH, and SiS
377	33_7,27-32_7,26	236 011.028	50	289	131.6	131	Strong ¹³CH₃OH
378	66_4,62-66_3,63 $^\star$	236 269.468	357	816	30.1	37	Blend with NH₂CH₂CN and H₂C³⁴S
380	66_5,62-66_4,63 $^\star$	236 269.469	357	816	30.1	37	Blend with NH₂CH₂CN and H₂C³⁴S
382	33_8,26-32_8,25	236 274.518	50	294	130.0	37	Blend with NH₂CH₂CN and H₂C³⁴S
383	23_6,17-22_5,18	236 483.115	100	188	12.0	37	Blend with NH₂CH₂CN and CH₂¹³CHCN
384	34_23,11-33_23,10 $^\star$	240 768.473	9	447	77.2	216	Strong CH₃¹³CH₂CN, CH₃CH₃CO, and C₂H₅OH
386	34_16,18-33_16,17 $^\star$	240 777.277	8	363	110.8	216	Strong CH₃¹³CH₂CN, CH₃CH₃CO, and C₂H₅OH
388	34_15,19-33_15,18 $^\star$	240 866.895	8	354	114.6	216	Strong C₂H₅CN and HNCO
390	34_14,21-33_14,20 $^\star$	240 996.801	8	345	118.2	216	Strong C₂H₅¹³CN, CH₃CH₃CO, and C³⁴S
392	33_7,26-32_7,25	241 104.938	12	290	132.3	216	Blend with CH₃¹³CH₂CN and U-line
393	36_2,34-35_3,33	241 154.165	10	304	60.8	216	Strong CH₃OH, $\varv_t$ = 1
394	36_3,34-35_3,33	241 155.214	10	304	147.7	216	Strong CH₃OH, $\varv_t$ = 1
395	36_2,34-35_2,33	241 155.889	10	304	147.7	216	Strong CH₃OH, $\varv_t$ = 1
396	36_3,34-35_2,33	241 156.938	10	304	60.8	216	Strong CH₃OH, $\varv_t$ = 1
397	34_{29, 5}-33_{29, 4} $^\star$	241 179.811	17	543	38.8	216	Strong CH₃OH, $\varv_t$ = 1
399	34_13,22-33_13,21 $^\star$	241 179.912	8	337	121.5	216	Strong CH₃OH, $\varv_t$ = 1
401	65_3,62-65_2,63 $^\star$	241 187.055	355	784	22.6	216	Strong CH₃OH, $\varv_t$ = 1
403	65_3,62-65_3,63 $^\star$	241 187.055	355	784	3.4	216	Strong CH₃OH, $\varv_t$ = 1
405	21_8,14-20_7,13	244 391.993	15	180	18.5	46	Strong ¹³CH₃CH₂CN and C₂H₅CN
406	21_8,13-20_7,13	244 396.589	15	180	1.4	46	Strong ¹³CH₃CH₂CN and C₂H₅CN
407	23_5,18-22_4,19	244 399.583	45	185	5.5	46	Strong ¹³CH₃CH₂CN and C₂H₅CN
408	21_8,14-20_7,14	244 437.241	15	180	1.4	46	Blend with C₂H₅CN, C₂H₅OH, and U-line
409	21_8,13-20_7,14	244 441.837	15	180	18.5	46	Blend with C₂H₅CN, C₂H₅OH, and U-line
410	23_7,16-22_6,17	245 129.808	16	191	16.1	72	Strong CH₂NH
411	36_3,33-35_4,32	245 273.854	100	310	52.6	72	Strong HC₃N, $\varv_4$ = 1 and C₂H₅¹³CN
412	36_4,33-35_4,32	245 297.601	100	310	146.7	72	Blend with CH₃CH₃CO and ³⁴SO₂
413	36_3,33-35_3,32	245 311.367	100	310	146.7	72	Blend with C₂H₅OH and SO₂
414	36_4,33-35_3,32	245 335.158	100	310	52.6	72	Strong SO₂
415	34_8,26-33_8,25	245 447.840	11	305	134.4	72	Strong C₂H₅OH, C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1, and ¹³CH₃CH₂CN
416	38_0,38-37_0,37 $^\star$	245 779.482	100	314	158.3	53	Strong CH₂¹³CHCN and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
418	38_0,38-37_1,37 $^\star$	245 779.550	18	314	80.5	53	Strong CH₂¹³CHCN and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
420	24_6,18-23_5,19	245 842.016	26	196	11.2	53	Blend with C₂H₃CN, $\varv_{11}$ = 1/ $\varv_{15}$ = 1
421	14_{12, 2}-13_{11, 3} $^\star$	247 059.416	14	162	25.4	68	Strong CH₃OCHO
423	14_{12, 2}-13_{11, 2} $^\star$	247 059.416	14	162	1.5	68	Strong CH₃OCHO
425	35_6,30-34_6,29	247 073.069	100	308	141.1	68	Strong C₂H₃CN and CH₂¹³CHCN
426	39_0,39-38_0,38 $^\star$	252 168.489	100	326	162.5	42	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
428	39_0,39-38_1,38 $^\star$	252 168.541	18	326	82.7	42	Blend with C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
430	24_7,17-23_6,18	252 254.714	16	199	16.0	42	Strong CH₃OH
431	25_7,19-24_6,18	254 026.124	15	207	16.1	32	Strong CH₃OH in absorption, C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1,
							and HC¹³CCN, $\varv_6$ = 1
432	15_{12, 3}-14_{11, 4} $^\star$	254 139.046	14	167	25.5	32	Strong C₂H₃CN
434	15_{12, 3}-14_{11, 3} $^\star$	254 139.046	14	167	1.5	32	Strong C₂H₃CN
436	36_14,23-35_14,22 $^\star$	255 232.834	8	368	127.8	217	Strong CH₃OH
438	17_{11, 6}-16_{10, 7} $^\star$	255 442.928	14	171	23.8	217	Strong CH₂CH¹³CN
440	17_{11, 6}-16_{10, 6} $^\star$	255 442.928	14	171	1.4	217	Strong CH₂CH¹³CN
442	36_13,24-35_13,23 $^\star$	255 458.533	8	360	131.0	217	Strong C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1 and CH₂¹³CHCN
444	37_4,33-36_5,32	255 646.981	8	327	46.2	217	Strong H¹³CCCN and NH₂CHO, $\varv_{12}$ = 1
445	23_8,16-22_7,15	257 978.249	15	195	18.7	1127	Strong CH₃CN, $\varv_8$ = 1
446	56_11,46-55_12,43	258 029.375	88	664	12.8	1127	Strong CH₃CN, $\varv_8$ = 1
447	38_3,35-37_4,34	258 032.591	9	334	57.1	1127	Strong CH₃CN, $\varv_8$ = 1
448	38_4,35-37_4,34	258 042.009	9	334	155.1	1127	Strong CH₃CN, $\varv_8$ = 1
449	38_3,35-37_3,34	258 047.578	9	334	155.1	1127	Strong CH₃CN, $\varv_8$ = 1
450	38_4,35-37_3,34	258 056.996	9	334	57.1	1127	Strong CH₃CN, $\varv_8$ = 1
451	23_8,15-22_7,16	258 162.637	15	195	18.7	1127	Strong ¹³CH₃OH and HC¹⁵N
452	36_9,27-35_9,26	258 237.747	10	334	141.2	1127	Strong CH₃CN, $\varv_8$ = 1 and SO
453	36_6,31-35_5,30	258 252.184	13	320	33.8	1127	Strong CH₃CN, $\varv_8$ = 1 and SO
454	26_7,20-25_6,19	258 801.772	16	216	15.9	1609	Strong CH₃¹³CH₂CN
455	37_6,32-36_6,31	260 009.847	8	332	149.4	413	Strong C₂H₅OH, CH₂¹³CHCN, and CH₃OCH₃
456	39_2,37-38_3,36	260 297.586	10	340	67.4	413	Strong C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
457	39_3,37-38_3,36	260 297.819	10	340	160.2	413	Strong C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
458	39_2,37-38_2,36	260 297.972	10	340	160.2	413	Strong C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
459	39_3,37-38_2,36	260 298.205	10	340	67.4	413	Strong C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1
460	37_7,31-36_7,30	263 345.617	9	337	148.6	74	Blend with HCC¹³CN, $\varv_7$ = 1
461	37_6,32-36_5,31	263 354.897	11	332	36.3	74	Blend with NH₂CH₂CN
462	37_11,27-36_11,26	263 432.848	8	358	141.1	74	Strong HNCO, $\varv_5$ = 1 and HNCO
463	37_11,26-36_11,25	263 445.456	8	358	141.2	74	Strong HNCO, $\varv_5$ = 1 and HNCO
464	20_10,11-19_9,10 $^\star$	263 669.118	14	183	22.4	108	Strong CH₃OCH₃, HNCO, and HC¹³CCN, $\varv_7$ = 1
466	20_10,11-19_9,11 $^\star$	263 669.145	14	183	1.4	108	Strong CH₃OCH₃, HNCO, and HC¹³CCN, $\varv_7$ = 1
468	36_7,29-35_7,28	264 087.850	11	326	145.6	108	Blend with H₂¹³CS and U-line
469	37_10,28-36_10,27	264 094.028	9	351	143.5	108	Blend with H₂¹³CS and U-line
470	40_2,38-39_3,37	266 674.808	10	352	69.7	91	Blend with O¹³CS and C₂H₅¹³CN
471	40_3,38-39_3,37 $^\star$	266 674.948	10	352	164.4	91	Blend with O¹³CS and C₂H₅¹³CN
473	40_3,38-39_2,37	266 675.181	10	352	69.7	91	Blend with O¹³CS and C₂H₅¹³CN
474	15_{13, 2}-14_{12, 3} $^\star$	266 949.479	14	174	27.6	91	Blend with SO₂ and U-line
476	15_{13, 2}-14_{12, 2} $^\star$	266 949.479	14	174	1.6	91	Blend with SO₂ and U-line
478	38_5,33-37_5,32	267 143.852	100	344	153.6	91	Strong NH₂¹³CHO, CH₃CH₃CO, and C₂H₅CN, $\varv_{13}$ = 1/ $\varv_{21}$ = 1

Notes: ^a Numbering of the observed transitions associated with a modeled line stronger than 20 mK. ^b Transitions marked with a $^\star$ are double with a frequency difference less than 0.1 MHz. The quantum numbers of the second one are not shown. ^c Frequency uncertainty. ^d Lower energy level in temperature units ( $E_{\rm l}/k_{{\rm B}}$ ). ^e Calculated rms noise level in $T_{{\rm mb}}$ scale.

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