117883-59-7
6-methyl-1,2-dihydropyrazolo[3,4-b]pyrazin-3-one
→
50627-49-1
3-氨基-5-甲基吡嗪-2-羧酰胺
6761-50-8
3-Amino-5-methylpyrazine-2-carboxylic acid