3,6-二氢-2,6-二氧代-2H-1,3-恶嗪-4-羧酸乙酯

4-羟基-5,6,8-三甲氧基喹啉-2-羧酸乙酯

ethyl 2-phenyldiazenyl-2-(phenylhydrazinylidene)acetate

2-Butenedioic acid,2-chloro-, (2Z)-

6-Methylpyridin-2-hydrazin