United States Pharmacopeia (USP) Reference Standard
Synonym(s): D(−)-Norgestrel; 13β-Ethyl-17α-ethynyl-17β-hydroxygon-4-en-3-one; 17α-Ethynyl-18-homo-19-nor-testosterone; 18,19-Dinor-13β-ethyl-17β-hydroxy-4-pregnen-20-yn-3-one; 18,19-Dinor-4-pregnen-20-yn-3-one; Levonorgestrel
Empirical Formula: C21H28O2
Formula Weight: 312.45
Linear Formula: C21H28O2
MDL Number: MFCD00199013