Butanoic acid, 2-[(4-nitrophenyl)hydrazono]-3-oxo-, ethyl ester
CAS No. 18795-00-1
Butanoic acid, 2-[2-(4-nitrophenyl)hydrazinylidene]-3-oxo-, ethyl ester
7-METHYLISATIN 11279-59-9
吡啶亚磺酸钠