83873-16-9 Usage
Uses
Epoxy Metradiene is an impurity from synthesis of Fluorometholone (F593145),a glucocorticoid; anti-inflammatory.
Check Digit Verification of cas no
The CAS Registry Mumber 83873-16-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,8,7 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 83873-16:
(7*8)+(6*3)+(5*8)+(4*7)+(3*3)+(2*1)+(1*6)=159
159 % 10 = 9
So 83873-16-9 is a valid CAS Registry Number.
83873-16-9Relevant articles and documents
Chemoselective hydrogenation of 17α-hydroxy-6-methylen-pregna-4,9(11)-diene-3,20-dione. Synthesis of fluorometholone
Marcos-Escribano, Andrés,Bermejo, Francisco A.,Bonde-Larsen, Antonio Lorente,Retuerto, Jesús Iglesias
, p. 8493 - 8496 (2009)
The development of an efficient hydrogenation method of 17α-hydroxy-6-methylen-pregna-4,9(11)-diene-3,20-dione by using wet (10%) Pd on carbon and triethylamine led us to the corresponding 6α-methyl-pregnane in good yield. This chemoselective process allo
