CAS Chem.name Chem.SMILES #Observed Mutagenicity without S9 #Observed Mutagenicity with S9 Bioassay - Reference(s) - 10147-37-2 Isopropyl sulfonyl chloride CC(C)S(=O)(=O)Cl in vitro Ames positive in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) TSUCHIYA,Y. et al WATER SCI. TECHNOL. 25(2):123-130, 1992 124-63-0 Methanesulfonyl chloride CS(=O)(=O)Cl in vitro Ames positive in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Nylund, L., et al Mutation Res., 1994, 320, 165-174 2547-61-7 Trichloromethane sulfonyl chloride O=S(=O)(Cl)C(Cl)(Cl)Cl in vitro Ames positive in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Nylund, L., et al , Mutation Res., 1994, 320, 165-174 121-60-8 4-(Acetylamino)benzenesulfonyl chloride CC(=O)Nc1ccc(S(=O)(=O)Cl)cc1 in vitro Ames negative in vitro Ames negative Bacterial Reverse Mutation Assay (e.g. Ames Test) Hansen et al. J. Chem. Inf. Model., 2009, 49 (9), pp 2077-2081