3-hydroxy-6-methylpyridine-2-carboxylic acid

3-羟基-6-甲基吡啶-2-羧醛

2,6-二甲基吡啶-3-醇

2-(hydroxymethyl)-6-methyl-4-nitro-3-pyridinol

3-羟基-6-甲基-2-硝基吡啶