Ethinyl estradiol

Ethinyl estradiol is a synthetic estrogen with the molecular formula C29H24O2 and a molecular weight of 296.44 g/mol, used primarily as a key ingredient in oral contraceptives and hormone replacement therapies. It is supplied as a white to off-white crystalline powder, with an EINECS number of 200-342-2. The compound exhibits a density of 1 g/cm³, consistent with standard pharmaceutical-grade estrogens. This product is not formulated into tablets or capsules; it is provided as a bulk active pharmaceutical ingredient for further processing.

The compound is synthesized through chemical routes that ensure high purity, with typical impurity profiles including estradiol, estriol, and related metabolites below 0.5% as per pharmacopeial standards. It is stable under dry, cool conditions and sensitive to light and moisture, requiring storage in sealed containers under nitrogen or desiccated conditions. No specific purity percentage is listed, but the description implies pharmaceutical-grade quality suitable for formulation into regulated products.

Buyers include pharmaceutical manufacturers in Asia, Latin America, and Eastern Europe that produce generic hormonal medications. The product is not intended for direct consumer sale. Packaging is described as robust but not detailed; buyers must confirm container type, inert gas purging, and moisture barrier specifications. Trade terms including MOQ, Incoterms, and lead time are not specified in the source and must be confirmed directly with the supplier. Certifications such as ISO or FDA are claimed but not verified.

Ka-Shing Business Trade Macau Co., Ltd. is registered in Macau at 23rd Floor, Block 3 La Cite, Areia Preta. The supplier is classified as imported with a harbor trust tier, indicating verified export documentation and shipping history. No information is provided on years in operation, manufacturing facilities, or internal quality control systems. The listing states the company trades pharmaceutical ingredients but does not claim ownership of production labs or GMP certification.

There is no evidence of ISO, FDA, or other regulatory certifications being held or audited by the supplier. Response rate and average response time are not tracked, suggesting minimal buyer interaction through the platform. Buyers should treat this as a trading entity sourcing from third-party manufacturers. All claims regarding purity, compliance, or certification must be substantiated with batch-specific certificates of analysis and third-party test reports before acceptance.