CAS Chem.name Chem.SMILES #Observed Mutagenicity Bioassay - Reference(s) - 60-09-3 Solvent Yellow 1 Nc1ccc(cc1)N=Nc1ccccc1 in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240; P&G Inventory 60-11-7 4-(dimethylamino)azobenzene CN(C)c1ccc(cc1)N=Nc1ccccc1 in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Zeiger, E., et. al.; Salmonella Mutagenicity Tests: III. Results From The Testing Of 255 Chemicals; Environ. Mol. Mutagen. 9(Suppl.9):1-110, 1987 51868-46-3 c.i. disperse blue 373 COc1cc(N=Nc2c(Br)cc(cc2[N+]([O-])=O)[N+]([O-])=O)c(NC(C)=O)cc1N(CC=C)CC=C in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) de Aragao Umbuzeiro, G., Freeman, H.S., Warren, S.H., de Oliveira, D.P., Terao, Y., Watanabe, T., Claxton, L.D., The contribution of azo dyes to the mutagenic activity of the Cristais River. Chemosphere, 2005, 60(1), 55-64. 3468-63-1 Pigment orange 5 Oc1ccc2ccccc2c1N=Nc1ccc(cc1[N+]([O-])=O)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) P&G Inventory; U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240 3025-77-2 1-((4-Nitrophenyl)azo)-2-naphthalenamine Nc1ccc2ccccc2c1N=Nc1ccc(cc1)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) P&G Inventory; Kazius J, McGuire R., Bursi R. Journal of Medicinal Chemistry 48 (1), pp. 312-32, 25 6530-27-4 N-Hydroxy-4-aminoazobenzene ONc1ccc(cc1)\N=N/c1ccccc1 in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240; Kazius J, McGuire R., Bursi R. Journal of Medicinal Chemistry 48 (1), pp. 312-32, 25 13301-61-6 c.i. disperse orange 37 CCN(CCC#N)c1ccc(cc1)N=Nc1c(Cl)cc(cc1Cl)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) de Aragao Umbuzeiro, G., Freeman, H.S., Warren, S.H., de Oliveira, D.P., Terao, Y., Watanabe, T., Claxton, L.D., The contribution of azo dyes to the mutagenic activity of the Cristais River. Chemosphere, 2005, 60(1), 55-64. 14097-03-1 c.i. basic red 18 CCN(CC[N+](C)(C)C)c1ccc(cc1)N=Nc1ccc(cc1Cl)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Bakshi, D. and Sharma, P.; Genotoxicity of Textile Dyes Evaluated With Ames Test adn Rec Assay; J. Environ. Pathol. Toxicol. Oncol. 22(2):101-109, 2003 56548-64-2 2-[(2-bromo-4,6-dinitrophenyl)azo]-5-(diethylamino)-4-methoxyacetanilde CCN(CC)c1cc(NC(C)=O)c(cc1OC)N=Nc1c(Br)cc(cc1[N+]([O-])=O)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) de Aragao Umbuzeiro, G., Freeman, H., Warren, S.H., Kummrow, F., Claxton, L.D., Mutagenicity evaluation of the commercial product CI Disperse Blue 291 using different protocols of the Salmonella assay. Food Chem. Toxicol., 2005, 43(1), 49-56. 2872-52-8 disperse red 1 CCN(CCO)c1ccc(cc1)N=Nc1ccc(cc1)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Ferraz, E.R., Umbuzeiro, G.A., de-Almeida, G., Caloto-Oliveira, A., Chequer, F.M., Zanoni, M.V., Dorta, D.J., Oliveira, D.P., Differential toxicity of Disperse Red 1 and Disperse Red 13 in the Ames test, HepG2 cytotoxicity assay, and Daphnia acute toxicity test. Environ. Toxicol., 2011, 26(5), 489-497. 3179-89-3 c.i. disperse red 17 Cc1cc(ccc1N=Nc1ccc(cc1)[N+]([O-])=O)N(CCO)CCO in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) SCCS (Scientific Committee on Consumer Safety), Opinion on Disperse Red 17, 12 December 2013. 23355-64-8 c.i. disperse brown 1 OCCN(CCO)c1ccc(N=Nc2c(Cl)cc(cc2Cl)[N+]([O-])=O)c(Cl)c1 in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Seifried, H.E., Seifried, R.M., Clarke, J.J., Junghans, T.B., San, R.H., A compilation of two decades of mutagenicity test results with the Ames Salmonella typhimurium and L5178Y mouse lymphoma cell mutation assays. Chem. Res. Toxicol., 2006, 19(5), 627-644. *10003-23-7 5'-[N-ethyl-N-[2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)ethyl]amino]-2'-(4-nitrophenylazo)acetanilide CCN(CCN1C(=O)C=CC1=O)c1ccc(\N=N\c2ccc(cc2)[N+]([O-])=O)c(NC(C)=O)c1 in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. 10009-75-3 6-amino-5-[(2-hydroxy-4-nitrophenyl)azo]-N-methyl-2-naphthalenesulfonamide CNS(=O)(=O)c1ccc2c(ccc(N)c2\N=N\c2ccc(cc2O)[N+]([O-])=O)c1 in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 *10009-78-9 5-(diethylamino)-5'-nitro-(2,2'-azobisphenol) CCN(CC)c1ccc(\N=N\c2ccc(cc2O)[N+]([O-])=O)c(O)c1 in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 *10016-86-7 N-hexadecyl-4-[5-tert-butyl-4-[4-[3-[8-(2-cyano-4-nitrophenylazo)-6-(propionylamino)-5-hydroxy-1-naphthylaminosulfonyl]phenylsulfonylamino]phenoxymethyl]-3-oxo-2,3-dihydroisoxazole-2-yl]-3-nitrobenzamide CCCCCCCCCCCCCCCCNC(=O)c1ccc(N2OC(=C(COc3ccc(NS(=O)(=O)c4cccc(c4)S(=O)(=O)Nc4cccc5c(O)c(NC(=O)CC)cc(\N=N\c6ccc(cc6C#N)[N+]([O-])=O)c45)cc3)C2=O)C(C)(C)C)c(c1)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 1021394-33-1 3-[N-benzyl-4-[(2-cyano-4-nitrophenyl)azo]anilino]propanoic acid 2-oxopropyl ester CC(=O)COC(=O)CCN(Cc1ccccc1)c1ccc(cc1)\N=N\c1ccc(cc1C#N)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 151285-25-5 2-[3-(2,6-dichloro-4-nitrophenylazo)-9H-carbazole-9-yl]ethanol OCCn1c2ccccc2c2cc(ccc21)\N=N\c1c(Cl)cc(cc1Cl)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 170778-70-8 2'-(2-chloro-4,6-dinitrophenylazo)-5'-ethylamino-4'-methoxyacetanilide CCNc1cc(NC(C)=O)c(cc1OC)\N=N\c1c(Cl)cc(cc1[N+]([O-])=O)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 204277-61-2 2-(N-{5-acetamido-4-[(2-chloro-6-cyano-4-nitrophenyl)diazenyl]-2-methoxyphenyl}-N-(methoxycarbonylmethyl)amino)propanoic acid methyl COC(=O)CN(C(C)C(=O)OC)c1cc(NC(C)=O)c(cc1OC)\N=N\c1c(Cl)cc(cc1C#N)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 213831-09-5 N-[5-(acetylamino)-4-[(2-chloro-4,6-dinitrophenyl)azo]-2-methoxyphenyl]-N-(2-ethoxy-2-oxoethyl)glycine methyl ester CCOC(=O)CN(CC(=O)OC)c1cc(NC(C)=O)c(cc1OC)\N=N\c1c(Cl)cc(cc1[N+]([O-])=O)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 22578-86-5 2'-(2-bromo-4,6-dinitrophenylazo)-5'-[N-(2-cyanoethyl)-N-ethylamino]-4'-methoxyacetanilide CCN(CCC#N)c1cc(NC(C)=O)c(cc1OC)\N=N\c1c(Br)cc(cc1[N+]([O-])=O)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 52583-35-4 5'-[bis(2-methoxyethyl)amino]-2'-[(2-cyano-4,6-dinitrophenyl)azo]acetoanilide COCCN(CCOC)c1ccc(\N=N\c2c(cc(cc2[N+]([O-])=O)[N+]([O-])=O)C#N)c(NC(C)=O)c1 in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 52583-53-6 2'-(2,6-dibromo-4-nitrophenylazo)-5'-diethylaminoacetanilide CCN(CC)c1ccc(N=Nc2c(Br)cc(cc2Br)[N+]([O-])=O)c(NC(C)=O)c1 in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 53950-33-7 N-[2-[(2-bromo-4,6-dinitrophenyl)diazenyl]-5-(2-cyanoethylamino)-4-methoxyphenyl]acetamide COc1cc(\N=N\c2c(Br)cc(cc2[N+]([O-])=O)[N+]([O-])=O)c(NC(C)=O)cc1NCCC#N in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 66557-45-7 N-[2-[(2-chloro-4,6-dinitrophenyl)diazenyl]-5-(diethylamino)phenyl]acetamide CCN(CC)c1ccc(\N=N\c2c(Cl)cc(cc2[N+]([O-])=O)[N+]([O-])=O)c(NC(C)=O)c1 in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 79295-99-1 N-[2-[(2-chloro-4,6-dinitrophenyl)diazenyl]-5-(diethylamino)-4-methoxyphenyl]acetamide CCN(CC)c1cc(NC(C)=O)c(cc1OC)\N=N\c1c(Cl)cc(cc1[N+]([O-])=O)[N+]([O-])=O in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019 96662-24-7 3-[N-benzyl-4-(4-nitrophenylazo)anilino]propiononitrile [O-][N+](=O)c1ccc(cc1)N=Nc1ccc(cc1)N(CCC#N)Cc1ccccc1 in vitro Ames positive Bacterial Reverse Mutation Assay (e.g. Ames Test) Division of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html. Divizion of Genetic and Mutagenesis, National Institute of Health Science, Japan. ANEI-HOU, AMES/ QSAR International Collaborative Study; http://www.nihs.go.jp/dgm/amesqsar.html; Last update; June 2019