the intermediates were characterized by physicochemical methods as neomycin b pyrophosphate ( c ( 23 ) h ( 48 ) n ( 6 ) o ( 19 ) p ( 2 ) ,3h ( 2 ) o ) , neomycin c pyrophosphate ( c ( 23 ) h ( 48 ) n ( 6 ) o ( 19 ) p ( 2 ) ,3h ( 2 ) o ) and neomycin c dipyrophosphate complex ( c ( 24 ) h ( 66 ) n ( 8 ) o ( 33 ) p ( 4 ) ) .
C0016673
neomycin b
C0027603
neomycin