CAS	Chemical Name	SMILES	#Observed Mutagenicity	Bioassay - 	Reference(s) -
1116-54-7	N-Nitrosodiethanolamine	OCCN(CCO)N=O	negative	Bacterial Reverse Mutation Assay (e.g. Ames Test)	P&G Inventory
101-25-7	N,N-dinitrosopentamethylenetetramine	O=NN1CN2CN(C1)CN(N=O)C2	negative	Bacterial Reverse Mutation Assay (e.g. Ames Test)	P&G Inventory
122341-55-3	Diazo-N-nitrosoetilefrin	CCN(CC(O)C1=CC(=O)C(=N#N)C=C1)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Kikugawa, K., Kato, T. and Takeda, Y.; Formation of a Highly Mutagenic Diazo Compound from the Bamethan-Nitrite Reaction; Mutat. Res. 177(1):35-43, 1987
70-25-7	N-Methyl-N'-Nitro-N-Nitrosoguanidine	CN(C(=N)NN(=O)=O)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Diehl, M. And Fort, F.; Spiral Salmonella Assay: Validation Against The Standard Pour-Plate Assay; Environ. Mol. Mutagen. 27(3):227-236, 1996
154-93-8	carmustine	O=C(NCCCl)N(CCCl)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency, Mutation Research, 168 (1986) 69-240
116539-70-9	2,4-Cyclohexadien-1-one, 4-(2-(butylnitrosamino)-1-hydroxyethyl)-6-	CCCCN(CC{P-}(O)C1=CC(=N#N)C(=O)C=C1)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Kikugawa, K., Kato, T. and Takeda, Y.; Formation of a Highly Mutagenic Diazo Compound from the Bamethan-Nitrite Reaction; Mutat. Res. 177(1):35-43, 1987
7090-25-7	Nitrosocarbaryl	CN(C(=O)Oc1cccc2ccccc12)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240
869-01-2	n-butyl-n-nitrosourea; 1-butyl-1-nitrosourea	CCCCN(C(N)=O)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	CCRIS database,Toxnet databases
13909-09-6	Semustine; 1-(2-Chloroethyl)-3-(4-methylcyclohexyl)-1-nitrosourea	CC1CCC(NC(=O)N(CCCl)N=O)CC1	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	CCRIS database,Toxnet databases
38434-77-4	ethylnitrosocyanamide	CCN(C#N)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240; CCRIS database,Toxnet databases: Lee, K., B. Gold, S. S. Mirvish, Mutagenicity of 22 N-Nitrosamides and Related Compounds for Salmonella typhimurium TA1535, Mutat. Res. 48 (1977), 131 – 138
759-73-9	1-ethyl-1-nitrosourea	CCN(C(N)=O)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	CCRIS database,Toxnet databases
92118-27-9	fotemustine	CCOP(=O)(C(C)NC(=O)N(CCCl)N=O)OCC	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	CCRIS database,Toxnet databases
18774-85-1	n-hexylnitrosourea;urea, 1-hexyl-1-nitroso-	CCCCCCN(C(N)=O)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240
13743-07-2	1-(2-hydroxyethyl)-1-nitrosourea	NC(=O)N(CCO)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240
33868-17-6	methylnitrosocyanamide	CN(C#N)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240
38777-13-8	nitroso-baygon;n-nitrosopropoxur	CC(C)Oc1ccccc1OC(=O)N(C)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240
16813-36-8	1-nitroso-5,6-dihydrouracil	O=C1CCN(N=O)C(=O)N1	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240
614-95-9	nitrosoethylurethane	CCN(C(=O)OCC)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240
56222-35-6	3-hydroxy-1-nitrosopyrrolidine	OC1CCN(N=O)C1	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240
684-93-5	n-methyl-n-nitrosourea	CN(C(N)=O)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	CCRIS database,Toxnet databases
55556-92-8	N-Nitroso-1,2,3,6-tetrahydropyridine	O=NN1CCC=CC1	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240
13010-07-6	Propyl-N'-nitro-N-nitrosoguanidine	CCCN(C(=N)NN(=O)=O)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240
816-57-9	Propylnitrosourea	CCCN(C(N)=O)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	CCRIS database,Toxnet databases
18883-66-4	streptozotocin	CN(C(=O)NC1C(O)C(O)C(CO)OC1O)N=O	negative	Bacterial Reverse Mutation Assay (e.g. Ames Test)	CCRIS database,Toxnet databases
592-62-1	methylazoxymethanol acetate	CC(=O)OC/N=N(\C)=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	CCRIS database,Toxnet databases
61499-28-3	N-Nitroso(2-hydroxypropyl)(2-oxopropyl)amine	CC(O)CN(CC(C)=O)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	PubChem database, https://pubchem.ncbi.nlm.nih.gov
55-18-5	N-Nitrosodiethylamine	CCN(CC)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	P&G Inventory
59-89-2	N-nitrosomorpholine	O=NN1CCOCC1	negative	Bacterial Reverse Mutation Assay (e.g. Ames Test)	P&G Inventory
62-75-9	N-nitrosodimethylamine	CN(C)N=O	negative	Bacterial Reverse Mutation Assay (e.g. Ames Test)	P&G Inventory
100-75-4	N-Nitrosopiperidine	O=NN1CCCCC1	negative	Bacterial Reverse Mutation Assay (e.g. Ames Test)	National Cancer Institute
25843-45-2	Azoxymethane	CN=N(C)=O	negative	Bacterial Reverse Mutation Assay (e.g. Ames Test)	P&G Inventory
7247-89-4	Piperidine, 2-methyl-N-nitroso-	CC1CCCCN1N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency; Mutation Research, 168 (1986) 69-240
11/6/3817	n-butyl-n-(4-hydroxybutyl)nitrosamine;4-(butylnitrosoamino)-1-butanol	CCCCN(CCCCO)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Mutation Research, 168 (1986) 69-240
55557-00-1	1h-1,4-diazepine, hexahydro-1,4-dinitroso-	O=NN1CCCN(N=O)CC1	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Mutation Research, 168 (1986) 69-240
140-79-4	dinitrosopiperazine	O=NN1CCN(N=O)CC1	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Mutation Research, 168 (1986) 69-240
924-16-3	n,n-dibutylnitrosamine;nitrosodibutylamine	CCCCN(CCCC)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Mutation Research, 168 (1986) 69-240
89911-79-5	n-nitroso-2,3-dihydroxypropyl-2-hydroxypropylamine	CC(O)CN(CC(O)CO)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	MORI,Y, YAMAZAKI,H, TOYOSHI,K, DENDA,A AND KONISHI,Y., MUTAGENIC ACTIVATION OF CARCINOGENIC N-NITROSOPROPYLAMINES BY LIVER S9 FRACTIONS FROM MICE, RATS AND HAMSTERS. EVIDENCE FOR A CYTOCHROME P-450-DEPENDENT REACTION; CARCINOGENESIS 7(3):375-379, 1986
621-64-7	N,N-dipropylnitrosamine	CCCN(CCC)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	CCRIS database,Toxnet databases
937-40-6	n-methyl-n-benzylnitrosamine	CN(Cc1ccccc1)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Mutation Research, 168 (1986) 69-240
16543-55-8	(S)-N'-Nitrosonornicotine	O=NN1CCCC1c1cccnc1	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Padma, P.R., Amonkar, A.J., Bhide, S.V., Mutagenic and Cytogenetic Studies of N'-Nitrosonornicotine and 4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butanone. Cancer Lett., 1989, 46(3), 173 - 180
5632-47-3	N-nitrosopiperazine	O=NN1CCNCC1	negative	Bacterial Reverse Mutation Assay (e.g. Ames Test)	Mutation Research, 168 (1986) 69-240
930-55-2	N-nitrosopyrrolidine	O=NN1CCCC1	negative	Bacterial Reverse Mutation Assay (e.g. Ames Test)	CCRIS database,Toxnet databases
64091-91-4	4-(n-methyl-n-nitrosamino)-1-(3-pyridyl)-1-butanone	CN(CCCC(=O)c1cccnc1)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	CCRIS database,Toxnet databases
7068-83-9	N-Methyl-N-nitroso-1-butanamine	CCCCN(C)N=O	positive	Bacterial Reverse Mutation Assay (e.g. Ames Test)	U.S. Environmental Protection Agency, Mutation Research, 168 (1986) 69-240