规格: | 98% |
分子量: | 318.5 |
包装 | 价格(元) |
500ug | 电议 |
1mg | 电议 |
Background:
Levonorgestrel-d6is intended for use as an internal standard for the quantification of levonorgestrel by GC- or LC-MS. Levonorgestrel is a synthetic progestin and the biologically active component of norgestrel .1In vivo, levonorgestrel (60 μg/day) suppresses estrus and pregnancy in female cats.2Post-coital insertion of subdermal levonorgestrel (5 mg pellet) implants prevents uterine implantation of embryos in mice.3Formulations containing levonorgestrel have been used as contraceptives.
1.Jones, R.C., Singer, A.C., and Edgren, R.A.The biological activities of norgestrel and its enantiomersInt. J. Fertil.24(1)39-43(1979) 2.Baldwin, C.J., Peter, A.T., Bosu, W.T., et al.The contraceptive effects of levonorgestrel in the domestic catLab. Anim. Sci.44(3)261-269(1994) 3.Shirley, B., Bundren, J.C., and McKinney, S.Levonorgestrel as a postcoital contraceptiveContraception52(2)277-281(1995)