PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1596582-2 1992 Procarbazine is converted initially to azoprocarbazine, which is then N-oxidized through a cytochrome P-450-mediated process to a mixture of the positional isomers, benzylazoxyprocarbazine and methylazoxyprocarbazine. methylazoxyprocarbazine 193-216 cytochrome P450 family 4 subfamily F member 3 Homo sapiens 91-107