investigation of diphenhydramine hydrochloride ( benadryl , benodine ) , its 4-methyl- ( neobenodine , toladryl ) , 2-methyl- ( disipal ) and 2 , 6 , 2 ' , 6'-tetramethyl ( bs 5933 ) homologues .
C0004963
diphenhydramine hydrochloride
C0700899
benadryl