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| CAS号 | 797-63-7 | 货号 | BCP21999 |
| 中文名 | 左炔诺孕酮 | ||
| 英文名 | Levonorgestrel | ||
| 中文别名 | |||
| 英文别名 | |||
| SMILES | CCC12CCC3C(C1CCC2(C#C)O)CCC4=CC(=O)CCC34 | ||
| 化学名称 | |||
| 分子式 | C21H28O2 | 分子量 | 312.45 |
| 纯度 | 98% | 配送 | 惯例下常温包邮 |
| 产品描述 | Levonorgestrel is a manufactured hormone used in a number of birth control methods. In pill form, it is useful within 120 hours as emergency birth control. It becomes less effective the longer after sex and only works before pregnancy has occurred. It is also combined with an estrogen to make combined oral birth control pill. Within an IUD, it is effective for long term prevention of pregnancy. An implantable form of levonorgestrel is also marketed in some countries. | ||
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