The evaluation of mutagenicities of 19 structurally related aromatic amines and acetamides in Salmonella typhimurium TA98 and TA100

19 aromatic amines were assayed for mutagenicity using Salmonella typhimurium strains TA98 and TA100 with and without the addition of S9 from Aroclor-1254-induced rat liver. These included: naphthalenes (1-amino-, 1-acetamido-, 2-amino-, 2-acetamido-, 1-amino-4-nitro- and 2-amino-1-nitro-), biphenyls (2-amino-, 2-acetamido-, 4-amino- and 4-acetamido-), fluorenes (2-amino- and 2-acetamido-), anthracenes (1-amino-, 1-acetamido-, 2-amino- and 2-acetamido-), 3-aminofluoranthene, 1-aminopyrene and 6-aminochrysene. None of the compounds were mutagenic when tested without S9. With S9, 15 of 19 were mutagenic for TA98 and 16 of the 19 were mutagenic for TA100. Overall, 2-aminoanthracene was the most potent mutagen. When compared to the parent amines, the respective acetamido derivatives were consistently less mutagenic.