PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19604090-1 2009 AIMS: S-1, an oral fluoropyrimidine, contains tegafur, which is converted to 5-fluorouracil mainly by CYP2A6. Tegafur 46-53 cytochrome P450 family 2 subfamily A member 6 Homo sapiens 102-108