21853-83-8 Usage
General Description
16-alpha,17-alpha-epoxy-3,20-dioxopregn-4-en-21-yl acetate, also known as 16,17-epoxyprogesterone, is a synthetic steroid hormone and an intermediate in the synthesis of various pharmaceutical agents. It is an acetate ester of 16,17-epoxyprogesterone, and it has potent anti-inflammatory and immunosuppressive properties. 16-alpha,17-alpha-epoxy-3,20-dioxopregn-4-en-21-yl acetate is also known for its use in the development of contraceptive and hormonal medications. Additionally, it has been studied for its potential in treating various dermatological conditions, such as eczema and psoriasis, due to its anti-inflammatory effects. Overall, 16,17-epoxyprogesterone has a wide range of potential applications in the fields of medicine and pharmaceuticals.
Check Digit Verification of cas no
The CAS Registry Mumber 21853-83-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,5 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21853-83:
(7*2)+(6*1)+(5*8)+(4*5)+(3*3)+(2*8)+(1*3)=108
108 % 10 = 8
So 21853-83-8 is a valid CAS Registry Number.
21853-83-8Relevant articles and documents
Reactions of 21-acetoxy-16α,17α-epoxypregn-4-ene-3,20-dione with nitrogen-containing nucleophilic agents
Protiva, Jiri,Nguyen, Thi Thu Huong,Urban, Jiri,Klinotova, Eva
, p. 1095 - 1104 (1997)
21-Acetoxy-16α,17α-epoxypregn-4-ene-3,20-dione (1) enters a reaction with acetonitrile catalyzed by perchloric acid, giving unusual products with the furostane skeleton. In contrast to analogous reactions, the reaction with sodium azide results in the azido derivative possessing the non-rearranged ring D. The 1H NMR, 13C NMR, and mass spectra are discussed.
