9-benzyl-6-methylpurine

ethyl (3E)-3-[(6-chloropyridazin-3-yl)hydrazinylidene]pentanoate

4-氨基-5-氰基-2-羟基-3-甲基苯甲酸乙酯

5-甲基-4-氧代-1,4-二氢-3-吡啶羧酸

2-(2-ethyl-1,3-dioxolan-2-yl)ethanol