Overview
Medroxyprogesterone is a synthetic progestogen derived from progesterone, developed to mimic the effects of natural progesterone. It was first synthesized in the 1950s and has since become a cornerstone in hormonal therapies. The compound is known for its high bioavailability and prolonged action, making it suitable for both oral and injectable formulations. In clinical practice, medroxyprogesterone is valued for its versatility. It is used in contraception (notably as Depo-Provera), hormone replacement therapy, and as part of treatment protocols for certain hormone-sensitive cancers. Its ability to suppress ovulation and alter endometrial tissue has made it particularly useful in gynecological applications.
Physical and Chemical Properties
Medroxyprogesterone presents as a white to off-white crystalline powder with a melting point range of 207-209°C. The compound is characterized by its low solubility in water but good solubility in organic solvents like acetone and ethanol. This property influences its formulation into various delivery systems, including tablets and long-acting suspensions. The molecular structure of medroxyprogesterone (C24H34O4) includes modifications that enhance its progestational activity compared to natural progesterone. These structural changes also contribute to its metabolic stability, allowing for less frequent dosing in clinical applications. The compound shows stability under normal storage conditions but should be protected from prolonged exposure to light and humidity.
Main Applications
The primary use of medroxyprogesterone is in hormonal contraception, where it is administered as an intramuscular injection (Depo-Provera) providing protection for three months. This application accounts for a significant portion of global usage. The compound is also prescribed for menstrual disorders and as part of hormone replacement therapy regimens in postmenopausal women. In oncology, medroxyprogesterone has therapeutic value in managing endometrial cancer and some cases of breast cancer, where it helps counteract estrogen-driven tumor growth. Additionally, it finds use in veterinary medicine for estrus synchronization in livestock. The versatility of applications stems from its ability to bind strongly to progesterone receptors while having limited estrogenic or androgenic effects.
Safety and Storage
Medroxyprogesterone requires careful handling due to its hormonal activity. Personnel should avoid direct contact with skin or inhalation of dust. In pharmaceutical settings, appropriate personal protective equipment including gloves and masks should be used when handling the powder form. Storage conditions are critical for maintaining product integrity. The compound should be kept in tightly sealed containers at temperatures below 25°C, protected from light and moisture. Long-term stability studies indicate proper storage can maintain potency for several years. Special disposal methods may be required for unused quantities to prevent environmental contamination.
B2B Procurement Guide
When procuring medroxyprogesterone in bulk, pharmaceutical-grade material with appropriate documentation is essential. Buyers should verify certificates of analysis including purity (typically ≥98%), residual solvent levels, and microbiological quality. Reputable suppliers will provide full traceability and compliance with current Good Manufacturing Practice (cGMP) standards. Lead times can vary significantly depending on the source, with prices influenced by order volume and purity specifications. For reference, wholesale prices commonly range between $50-$200 per kilogram. Buyers should establish quality agreements with suppliers that include specifications for particle size, polymorphic form (when relevant), and packaging requirements to ensure material suitability for intended formulations.