2-methylpyrrolo[3,4-c]pyridine-1,3-dione

1,8-dihydroxypyrido[2,3-d]pyridazin-5-one

2,3-二(羟甲基)吡啶盐酸盐

2,3-双（氯甲基）吡啶

1-oxidopyridin-1-ium-2,3-dicarboxylic acid