| Methylnorethindrone |
| DL-13beta-ethyl-17alpha-ethynyl-17beta-hydroxygon-4-en-3-one |
| 13-ethyl-17-hydroxy-19-dinor-17-alpha-pregn-4-en-20-yn-3-on (+-)-1 |
| (+-)-13-ethyl-17-hydroxy-18,19-dinor-17-alpha-pregn-4-en-20-yn-3-one |
| (+-)-norgestrel |
| 13-ethyl-17-hydroxy-19-dinorpregn-4-en-20-yn-3-on (17-alpha)-(+-)-1 |
| alpha-norgestrel |
| dl-13-beta-ethyl-17-alpha-ethynyl-17-beta-hydroxygon-4-en-3-one |
| dl-13-beta-ethyl-17-alpha-ethynyl-19-nortestosterone |
| dl-norgestrel |
| fh 122-a |
| ld norgestrel |
| monovar |
| norgestrel |
| sh 70850 |
| sh 850 |
| wy 3707 |
