Component A: 3.3.20.20-bis(ethylenedioxy)-5α,17α-dihydroxy-11β-[4-(N,N-dimethylamino)-phenyl]-19-norgestrel- 9-(11)-ene
| Column | Welch Ultisil XB-C18 4.6×250mm，5μm (P/N: 00201-31043) |
| Detector | 210nm |
| Temperature | 30℃ |
| Flow Rate | 1.0ml/min |
| Injection Volume | 20ul |
Mobile Phase
| Time（min） | Water（%） | Acetonitrile（%） |
| 0-20 | 30-0 | 70-100 |
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