the 1,2-disubstituted hydrazines and hydrazides , procarbazine and iproniazid , acted similarly to the monosubstituted hydrazines , while 1,2-dimethylhydrazine elicited no response , either in observable spectral changes or loss of co-reactive cytochrome p-450 .
C0022059
iproniazid
C0020233
hydrazines