1. APIs
  2. Norethindrone Acetate
  3. Impurities

Norethindrone Acetate Impurities

Name Structure CASRN Other Names and Identifiers
3-Ethoxy-19-nor-17α-pregn-3,5-dien-20-yn-17-yl Acetate structure
  • BP Norethisterone Acetate Impurity I
3-(1-methylethoxy)-19-nor-17α-pregn-3,5-dien-20-yn-17-yl Acetate structure
  • BP Norethisterone Acetate Impurity H
6-Ketonorethindrone Acetate structure
  • BP Norethisterone Acetate Impurity G
  • 3,6-dioxo-19-nor-17α-pregn-4-en-20-yn-17-yl acetate
6β-Hydroxynorethindrone Acetate structure
  • BP Norethisterone Acetate Impurity F
  • 6β-hydroxy-3-oxo-19-nor-17α-pregn-4-en-20-yn-17-yl Acetate
3,20-Dioxo-19-nor-17α-pregn-4-en-17-yl Acetate structure
  • BP Norethisterone Acetate Impurity E
6β-Acetyl-3-oxo-19-nor-17α-pregn-4-en-20-yn-17-yl Acetate structure
  • BP Norethisterone Acetate Impurity D
3-Oxo-19-nor-17α-pregn-5-en-20-yn-17-yl Acetate structure
  • BP Norethisterone Acetate Impurity C
3-Oxo-19-nor-17α-pregn-5(10)-en-20-yn-17-yl Acetate structure
  • BP Norethisterone Acetate Impurity B
Norethindrone structure 68-22-4
  • BP Norethisterone Acetate Impurity A
  • Norethisterone
Norandrostenedione structure
  • BP Norethisterone Impurity B
  • BP Norethisterone Acetate Impurity J
  • estra-4-ene-3,17-dione
  • 4-oestrene-3,17-dione
  • Impurity 2 (Gorog 1987)