aza-steroid dutasteride http://purl.bioontology.org/ontology/MESH/D000068538 http://purl.bioontology.org/ontology/RXNORM/228790 http://purl.bioontology.org/ontology/SNOMEDCT/385572003 http://purl.obolibrary.org/obo/CHEBI_521033 http://purl.obolibrary.org/obo/NCIT_C47503 https://en.wikipedia.org/wiki/Dutasteride https://www.wikidata.org/wiki/Q424760 G04CB02 An aza-steroid that is inasteride in which the tert-butyl group is replaced by a 2,5-bis(trifluoromethyl)phenyl group. A synthetic 4-azasteroid, dutasteride is a selective inhibitor of both the type 1 and type 2 isoforms of steroid 5alpha-reductase, an intracellular enzyme that converts testosterone to 5alpha-dihydrotestosterone. Dutasteride is used for the treatment of symptomatic benign prostatic hyperplasia in men with an enlarged prostate gland. δ-lactam (trifluoromethyl)benzene