Danazol Clinical data Trade names Azol, Bonzol, Cyclomen, Danol, Nazol AHFS/Drugs.com Monograph MedlinePlus a682599 Pregnancy category AU: D US: X (Contraindicated) Routes of administration Oral ATC code G03XA01 (WHO) Legal status Legal status AU: S4 (Prescription only) CA: ℞-only UK: POM (Prescription only) US: ℞-only Pharmacokinetic data Metabolism Hepatic[1] Biological half-life 3–6 hours (acute), 24–26 hours (chronic)[1] Excretion Urine, feces[1] Identifiers IUPAC name (1S,2R,13R,14S,17R,18S)-17-ethynyl-2,18-dimethyl-7-oxa-6-azapentacyclo[11.7.0.02,10.04,8.014,18]icosa-4(8),5,9-trien-17-ol Synonyms WIN-17757; 17α-Ethynyl-17β-hydroxy-4-androsten-[2,3-d]isoxazole CAS Number 17230-88-5 Y PubChem CID 28417 IUPHAR/BPS 6942 DrugBank DB01406 Y ChemSpider 26436 Y UNII N29QWW3BUO KEGG D00289 Y ChEBI CHEBI:4315 Y ChEMBL CHEMBL1479 Y ECHA InfoCard 100.037.503 Chemical and physical data Formula C22H27NO2 Molar mass 337.5 g/mol 3D model (Jmol) Interactive image SMILES C#C[C@]5(O)CC[C@H]4[C@H]3[C@@H]([C@@]2(/C(=C\c1oncc1C2)CC3)C)CC[C@@]45C InChI InChI=1S/C22H27NO2/c1-4-22(24)10-8-18-16-6-5-15-11-19-14(13-23-25-19)12-20(15,2)17(16)7-9-21(18,22)3/h1,11,13,16-18,24H,5-10,12H2,2-3H3/t16-,17+,18+,20+,21+,22+/m1/s1 Y Key:POZRVZJJTULAOH-LHZXLZLDSA-N Y (verify)