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Reichstein's substance S 21-acetate

孕甾-4-烯-17α,21-二醇-3,20-二酮-21-醋酸酯

Also known as: 17α,21-Dihydroxyprogesterone 21-acetate, 21-Acetoxy-17α-hydroxypregn-4-ene-3,20-dione, 11-Deoxycortisol 21-acetate, Cortexolone 21-acetate, Cortodoxon 21-acetate, 17α-Hydroxy-11-deoxycorticosterone 21-acetate, NSC81196

Reichstein's substance S 21-acetate (CAS 640-87-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C23H32O5 and a molecular weight of 388.49700 g/mol. It is also known as 17α,21-Dihydroxyprogesterone 21-acetate, 21-Acetoxy-17α-hydroxypregn-4-ene-3,20-dione and 11-Deoxycortisol 21-acetate. Key properties include a melting point of 233-235ºC, a boiling point of 537.9ºC at 760 mmHg, a density of 1.2g/cm3 and a flash point of 181.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
640-87-9
Jingsj CID
J-1162510-6
Molecular Formula
C23H32O5
Chinese Name
孕甾-4-烯-17α,21-二醇-3,20-二酮-21-醋酸酯
Molecular Weight
388.49700 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point233-235ºC
Boiling Point537.9ºC at 760 mmHg
Density1.2g/cm3
Flash Point181.8ºC

Frequently Asked Questions

What is the CAS number of Reichstein's substance S 21-acetate?

The CAS number of Reichstein's substance S 21-acetate is 640-87-9.

What are the molecular formula and molecular weight of Reichstein's substance S 21-acetate?

Reichstein's substance S 21-acetate has molecular formula C23H32O5 and molecular weight 388.49700 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Reichstein's substance S 21-acetate (CAS 640-87-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1162510-6 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.