4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butanol

**Semantic type:** Hazardous or Poisonous Substance|Organic Chemical

**Definition:** The major metabolite of the potentially carcinogenic nitrosamine 4-methylnitrosamino-1,3-pyridyl-1-butanone (nicotine-derived nitrosamine ketone; NNK) that is detected in the urine of subjects exposed to tobacco products. 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (nicotine-derived nitrosamine alcohol; NNAL) is produced by carbonyl reduction of NNK and may also be a carcinogen.

**Synonyms:** - 3-Pyridinemethanol, Alpha-(3-(Methylnitrosoamino)Propyl)- - 4-(METHYLNITROSAMINO)-1-(3-PYRIDYL)-1-BUTANOL - 4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butan-1-Ol - 4-(Methylnitrosoamino)-1-(3-Pyridyl)-1-Butanol - 4-[Methyl(Nitroso)Amino]-1-(Pyridin-3-Yl)Butan-1-Ol - Alpha-(3-(Methylnitrosoamino)Propyl)-3-Pyridinemethanol - NNAL - Nicotine-Derived Nitrosamine Alcohol