614-00-6N-Nitroso N-methyl N-phenylamine (NMPA)

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Catalogue No.:	VL3850093
CAS No.:	614-00-6
Mol. Formula:	C7H8N2O
Mol. Weight:	136.15 g/mol

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Additional information on CAS 614-00-6

Parent drug

Valsartan

IUPAC Name

Phenylmethylnitrosamine

Pharmacopeial Synonyms

N/A

Synonyms

N-Methyl-N-nitrosoaniline; N-methyl-N-phenylnitrous amide; Nitrosomethylaniline; Methylphenylnitrosamine ;N-Nitrosomethylphenylamine;Methylnitroso phenylamine;1-Methyl-2-oxo-1-phenylhydrazine

Smiles

O=NN(C1=CC=CC=C1)C

InChI

InChI=1S/C7H8N2O/c1-9(8-10)7-5-3-2-4-6-7/h2-6H,1H3

FDA Potency Category 2 NDSRI

100 ng/day is the U.S. FDA’s current Acceptable Intake (AI) limit for N-nitroso-methylphenylamine or N-nitroso-N-methylaniline (NMPA) (NDSRI). Refer to the FDA nitrosamine page for the latest guidance.

Characterization Data (Included)

HPLC, MASS/LC-MS, 1H NMR, FT-IR, Potency, and Structure Elucidation Report (SER).

Additional Characterization Data

QNMR, D2O Exchange, 13C NMR, 13C APT, COSY NMR, NOESY NMR, 15N NMR, HSQC NMR, HMQC NMR, and HMBC NMR. These are available upon request and may be free or subject to additional charges.

Description

N-Methyl-N-nitrosoaniline, also designated N-nitroso-N-methyl-N-phenylamine (NMPHA, NMPA) and CAS 614-00-6, is an aromatic nitrosamine impurity with formula C7H8N2O and molecular weight 136.15 g/mol. The structure contains a nitrosated tertiary aniline nitrogen, a motif associated with electrophilic activation and potential genotoxic concern under ICH M7 concepts. It may arise during nitrosation of N-methylaniline precursors or through process contamination from nitrosating agents. Trace-level determination generally relies on LC-MS/MS or GC-MS, often with selective ion monitoring and careful control of background nitrosamine artifacts.