ethyl 5-oxo-3-phenyl-2H-1,2,4-triazine-6-carboxylate

N,N'-二苄基草酰二胺

二水杨醛缩乙二胺钴

diethyl 2-[(4-methylphenyl)hydrazinylidene]propanedioate

2-氨基-4,5-二氢-4-羟基-5-氧代-1H-咪唑-4-羧酸乙酯