Deuterated methyl mercaptan (CH3SD): Laboratory rotational spectroscopy and search toward IRAS 16293–2422 BOlena Zakharenko, Frank Lewen, Vadim V. Ilyushin, Maria N. Drozdovskaya, Jes K. Jørgensen, Stephan Schlemmer and Holger S. P. MüllerA&A, 621 (2019) A114DOI: https://doi.org/10.1051/0004-6361/201834472