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.
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.
Beschreibung
N-Methyl-N-nitrosoanilin, auch bezeichnet als N-Nitroso-N-methyl-N-phenylamin (NMPHA, NMPA) und CAS 614-00-6, ist eine aromatische Nitrosamin-Verunreinigung mit der Summenformel C7H8N2O und einer molaren Masse von 136.15 g/mol. Die Verbindung enthält ein nitrosiertes tertiäres Anilin-Stickstoffatom, ein Strukturmotiv, das mit elektrophiler Aktivierung und potenzieller genotoxischer Relevanz im Sinne von ICH M7 verbunden ist. Sie kann bei der Nitrosierung von N-Methylanilin-Vorstufen oder durch prozessbedingte Kontamination mit nitrosierenden Agenzien entstehen. Die Spurenbestimmung erfolgt typischerweise mittels LC-MS/MS oder GC-MS mit selektiver Ionenüberwachung und strenger Kontrolle von Artefakten.
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