Reichstein's Substance S 21-acetate CAS 640-87-9

Pharmaceutical Intermediate: Used in the synthesis of corticosteroid drugs, such as cortisol (hydrocortisone) and other glucocorticoids or mineralocorticoids. It serves as a key precursor in steroid hormone production for medications used in anti-inflammatory therapies, immunosuppressive treatments, and hormonal replacement therapies.

Research Reagent: Employed in biochemical studies related to steroid biosynthesis, hormone metabolism, and the development of novel steroidal pharmaceuticals.

Store in a cool, dry, well-sealed container at 2-8°C (for long-term stability) or as directed by the manufacturer. Short-term storage at room temperature may be acceptable if the container is tightly closed and protected from light and moisture.

Keep away from direct light, heat sources, and areas with high humidity. Use airtight packaging or desiccants to minimize moisture absorption.

Store separately from strong oxidizing agents, acids, or bases to prevent chemical reactions.

Light Sensitivity: Degrades when exposed to prolonged light; store in amber or opaque containers in dark areas.

Moisture Sensitivity: Hygroscopic properties may lead to decomposition in humid environments; handle under dry conditions (e.g., in a fume hood with low humidity).

Thermal Stability: Stable within the recommended storage temperature range; avoid repeated freeze-thaw cycles or exposure to elevated temperatures (>25°C), which may compromise purity.

Chemical Stability: Incompatible with strong oxidizing/reducing agents and corrosive substances; ensure segregated storage from such materials.

Shelf Life: Typically remains stable for 2–3 years when stored correctly, but always check the manufacturer's expiration date and follow their specific guidelines.

Company Profile

ZHONGDA (ZHENGZHOU) INTERNATIONAL EXP.&IMP.CO.,LTD. Is a subsidiary of HENAN KANGYUAN FLAVOR GROUP CO.,LTD.

 

ZhongDa operates monomeric frag rances, synthetic fragrances, chemical raw materials, pharmaceutical and dye intermediates,agricultural and sideline products, metal materials and food flav ors etc..
It is also responsible for the procurement ( of various raw materials, instruments and equipments which are required for the production, engineering,re research and development of subsidiaries of Kangyuan group company. Relying on strong financial support, professional sales network, and high-quality product services, ZhongDa has become the partner of dom nestic and foreign manufacturers and professional customers, and it is a foreign trade-oriented enterpl rise with considerable strength in the spice industry.

ZHONGDA (ZHENGZHOU) INTERNATIONAL EXP.&IMP.CO.,LTD. was established in 2007, with a group of professional business trade, product research and development team.

 

It has rich experience in foreign trade, good domestic and international business reputation, and extensive sales channel advantages. Through the joint efforts, ZhongDa has achieved outstanding results. Our products sell well all over the country and are exp( orted to Southeast Asia, Middle East, America, Europe and other countries and regions. And enjoy high re eputation from domestic and foreign customers.
ZhongDa adheres to the tenet of"Quality first, service firs st". We sincerely hope to establish good coope rative relationship with more companies and strive to mer et the different requirements of customers. We hope that ZhongDa products will help you succeed in your pr oducts. We hope that our products will develop together in big market and create brilliant future. We sincer rely welcome customers to visit, guide and call us!

Advantages

 

1). More than 30 years of production experience and more than 10 years of export sales experience.
2). Our products have Kosher, ISO and Halal certificate.
3). Small batch shipment and sub-packaging is available.
4). Provide COA, MSDS, Health Certificate and Origin Certificate.
5). Quality first, service best.

 

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