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Table 2

Comparison of the CH3OH/CH3CHO abundance ratio as derived towards L1157-B1 with those measured towards Class 0 hot corinos using interferometric observations.

Object CH3 OH/CH3CHO References
L1157-B0e 1.5 × 102 1
L1157-B1b 1.9 × 102 1
HH212-mm 0.9–3 × 102 2, 3, 4, 5
IRAS 16293–2422B 1 × 102 6, 7
NGC 1333–IRAS 4A2 3–6 × 102 8, 9
Barnard 1b–S 5 × 102 10
L483 2 × 102 11

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