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5-Methyl-2-pyrazinecarboxylic acid Pyrazine-2,5-dicarboxylic acid Acipimox METHYL 5-METHYLPYRAZINE-2-CARBOXYLATE 5-Methyl-2,3-pyrazinedicarboxylic acid ethyl 5-methylpyrazine-2-carboxylate Pyrazinemethanol, 3,5,6-trimethyl- (6CI,9CI) Fructosazine 2-Methoxymethyl-5-methylpyrazine 4-oxide 2-METHYL-5-ARABOTETRAHYDROXYBUTYLPYRAZINE