Norgestrel

This classification denotes a therapeutic progestin with the molecular formula C21H28O2, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier 3J8Q1747Z2, chemically known as 18,19-dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-, (17.alpha.)-(.+/-.)- but generally known as norgestrel, which bears US NIH Compound Identifier 4542. European Medicines Agency schedules Norgestrel in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB09371MIG. The term NORGESTREL is an International Non-Proprietary Name. NORGESTREL is scheduled in the U.S. International Trade Commission's Harmonized Tariff System (HTS) Pharmaceutical Appendix. Most nations schedule norgestrel under HS 29372300 and SITC 54153. As of Q4 2014, NORGESTREL remains the US FDA Preferred Term for this commodity. Norgestrel bears US NLM identifiers UMLS ID C0699169 and NCI Concept Code C703. SMILES: OC1(C2(C(C3C(CC2)C2C(=CC(=O)CC2)CC3)CC1)CC)C#C.