Levonorgestrel (D-(-)-Norgestrel) (Etonogestrel EP Impurity G)(CAS: 797-63-7)

Levonorgestrel (D-(-)-Norgestrel), with the CAS number 797-63-7, is a synthetic progestin used in hormonal contraceptives. It is a derivative of norgestrel and has the chemical formula C21H28O2. The compound is characterized by its potency as a progesterone receptor agonist and its ability to inhibit ovulation, making it a key component in emergency contraceptive pills and other hormonal therapies.

Levonorgestrel (CAS: 797-63-7) is primarily used in pharmaceuticals as a contraceptive agent. It is also employed in research for studying hormonal effects and in the production of other progestin-based medications. Its applications include emergency contraception, hormone replacement therapy, and as an impurity in drug development processes.

Levonorgestrel (CAS: 797-63-7) is generally considered safe when used as directed in medical applications. However, it may cause side effects such as nausea, headaches, or changes in menstrual patterns. Proper handling and adherence to safety guidelines are essential, particularly during storage and administration to ensure its efficacy and minimize risks.

Levonorgestrel (CAS: 797-63-7) should be stored in a cool, dry place away from light. It is typically kept at a temperature between 15°C to 25°C (59°F to 77°F) and in airtight containers to maintain stability. Avoid exposure to moisture and direct sunlight to preserve its chemical integrity and potency.