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toxopyrimidine Thiamine Toxopyrimidine (4-Amino-2-methyl-5-pyrimidinyl) 4-AMino-2-Methyl-5-pyriMidineMethanol 2-Methyl-4-amino-5-pyrimidinemethanol Thiamine Impurity 15 (Toxopyrimidine) 5-Pyrimidinemethanol, 4-amino-2-methyl- (4-amino-2-methylpyrimidin-5-yl)methanol (4-Amino-2-methyl-5-pyrimidinyl)methanol 4-Amino-5-Hydroxymethyl-2-Methylpyrimidin 4-Amino-2-methyl-5-pyrimidinemethanol &gt 2-methyl-4-amino-5-hydroxymethylpyrimidine (4-azanyl-2-methyl-pyrimidin-5-yl)methanol 4-Amino-5-hydroxymethy1-2-methylpyrimidine 5-Pyrimidinemethanol, 4-amino-2-methyl- (8CI,9CI) Synthesis of (4-Amino-2-methyl-pyrimidin-5-yl)-methanol (4-Amino-2-methyl-5-pyrimidinyl)methanol (Toxopyrimidine) 4-Amino-5-Hydroxymethyl-2-methylpyrimidine ISO 9001：2015 REACH