Progestogen Oral Contraceptive Powders Norgestrel CAS 6533-00-2


Quick Details for Norgestrel

Product Name : Norgestrel
CAS: 6533-00-2
MF: C21H28O2
MW: 312.45
EINECS: 212-349-8
Chemical Properties: White Solid
Usage : Progestogen, oral contraceptive. The bioactive enantiomer is levorotatory . An intermediate to the glucuronide metabolite of Levonorgestrel.


Norgestrel Description

Norgestrel is an old progestin that has been used in hormonal contraceptives . Norgestrel is a mixture of two stereoisomers , dextro-norgestrel (CAS# 797-64-8 ) and levo-norgestrel (CAS# 797-63-7 ) . Only levonorgestrel is biologically active.Therefore, while some medications may contain dextronorgestrel , they are often labeled in terms of their levonorgestrel content only , ignoring the inert isomer.

Norgestrel, a second-generation progestin, has a high progestational effect, as well as a high androgenic level. The level of progestational effect applies to how successful the progestin is at preventing ovulation (thereby, pregnancy) and lessening menstrual bleeding. This progestin is highly effective at both. The level of the androgenic effect refers to the chance of unwanted side effects such as acne and hirsutism (female unwanted hair growth), which increase as the androgenic level increases. This means birth control utilizing this progestin could have a higher instance of unpleasant side effects such as acne and unwanted hair growth.


Norgestrel Dosage

You will take your first pill on the first day of your period or on the first Sunday after your period begins. You may need to use back-up birth control, such as condoms or a spermicide, when you first start using this medication. Follow your doctor’s instructions.

Take one pill every day, no more than 24 hours apart. When the pills run out, start a new pack the following day. You may get pregnant if you do not take one pill daily. Get your prescription refilled before you run out of pills completely.

The 28 day birth control pack contains seven “reminder” pills to keep you on your regular cycle. Your period will usually begin while you are using these reminder pills.

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