1) 6-hydroxy-3-succinoylpyridine oxygenase 6-羟基-3-琥珀酰吡啶氧化酶2) 1-ethyl-1,2-dihydro-6-hydroxy-4-methyl-2- oxo-3-py 1-乙基-1,2-二氢化-6-羟基-4-甲基-2-氧代-3-吡啶腈3) 1,2-dihydro-1,4-dimethyl-6-hydroxy-2-oxo-nicotinonitril 1,2-二氢化-6-羟基-1,4-二甲基-2-...