2-氨基-4,7-二羟基-6-甲基蝶啶

2-(2-amino-4,7-dioxo-1,8-dihydropteridin-6-yl)acetic acid

2-amino-6-(2-oxopropyl)-1,8-dihydropteridine-4,7-dione

2-氨基-1,5-二氢-7-甲基蝶啶-4,6-二酮

2-amino-7-methyl-4-oxo-1H-pteridine-6-carboxylic acid