CAS	Chem.name	Chem.SMILES	#Observed Mutagenicity 	Bioassay - 	Reference(s) -
616-91-1	 Acetylcysteine	CC(=O)NC{P+}(CS)C(O)=O	in vitro Ames positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Glatt H., Endogenous mutagens derived from amino acids, Mutat Res., 1990, 238(3):235-43
60-51-5	Dimethoate	CNC(=O)CSP(=S)(OC)OC	in vitro Ames positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	P&G Inventory
19246-18-5	Cysteinylglycine	NC{P-}(CS)C(=O)NCC(O)=O	in vitro Ames positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Stark, AA., et. al.; Effect of Ph on Mutagenesis by Thiols in Salmonella Typhimurium TA102; Mutat. Res. 224(1):89-94, 1989
3411-58-3	Ethyl cysteine	CCOC(=O)C(N)CS	in vitro Ames positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Stark, AA., et. al.; Effect of Ph on Mutagenesis by Thiols in Salmonella Typhimurium TA102; Mutat. Res. 224(1):89-94, 1989
52-67-5	Penicillamine	CC(C)(S)C{P-}(N)C(O)=O	in vitro Ames positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Glatt, H. and Oesch, F.; Mutagenicity of Cysteine and Penicillamine and its Enantiomeric Selectivity; Biochem. Pharmacol. 34(20):3725-3728, 1985; Stark, AA., et. al.; Effect of Ph on Mutagenesis by Thiols in Salmonella Typhimurium TA102; Mutat. Res. 224(1):89-94, 1989
52-90-4	L-Cysteine, Cysteine	NC{P-}(CS)C(O)=O	in vitro Ames positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Glatt, H., Mutagenesis, 1989,  4(3), 221-227. Biochem. Pharmacol. 34(20):3725-3728, 1985
52-89-1	L-Cysteine_hydrochloride	Cl_NC{P-}(CS)C(O)=O	in vitro Ames positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Ishidate Jr., et al  Food and Chemical Toxicology, 22, 1984, 623–636.
156-57-0	cysteamine hydrochloride	SCCN{+}.Cl{-}	in vitro Ames positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	D. Kirkland, L. Reeve, D. Gatehouse, P. Vanparys, A core in vitro genotoxicity battery comprising the Ames test plus the in vitro micronucleus test is sufficient to detect rodent carcinogens and in vivo genotoxins, Mutat. Res. 721 (2011) 27-73.