Synonyms:
4-(4-chlorobenzyl)phthalazin-1(2h)-one ; 4-[(4-chlorophenyl)methyl]phthalazin-1(2h)-one ; 4-(4-chlorobenzyl)-1(2h)-phthalazinone ; 4-(4-chloro-benzyl)-2h-phthalazin-1-one ; 4-[(4-chlorophenyl)methyl]-1(2h)-phthalazinone ; 4-(4-chlorobenzyl)-1,2-dihydrophthalazine-1-one ; azelastine related compound d ; azelastine impurity d(usp) ; phthalazinone azelastine analog
