565192-00-9

3-ethyl-4-oxophthalazine-1-carbohydrazide 3-Ethyl-4-oxo-3,4-dihydrophthalazine-1-carbohydrazide 1-Phthalazinecarboxylic acid, 3-ethyl-3,4-dihydro-4-oxo-, hydrazide 1-Phthalazinecarboxylicacid,3-ethyl-3,4-dihydro-4-oxo-,hydrazide(9CI)