28971-58-6 Usage
Originator
Acrocinonide ,Onbio Inc.
Manufacturing Process
A suspension of 1.0 g of 9-fluoro-11β,16α,17,21-tetra-hydroxy-pregna-1,4-
diene-3,20-dione in a mixture of 35 ml of dioxan, 15 ml of acrolein and 0.1 ml
of perchloric acid was stirred for 3 h at room temperature. The clear solution
thus obtained was poured into an aqueous saturated solution of sodium
bicarbonate. The mixture was extracted twice with benzene, and the benzenic
extract was concentrated to a small volume. The resulting crystals were
collected and the 9-fluoro-11β,21-dihydroxy-16α,17-(2-propenylidenedioxy)-
pregna-1,4-diene-3,20-dione was obtained as white crystals, melting point
200°-205°C.
Therapeutic Function
Antiinflammatory, Antiallergic
Check Digit Verification of cas no
The CAS Registry Mumber 28971-58-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,9,7 and 1 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 28971-58:
(7*2)+(6*8)+(5*9)+(4*7)+(3*1)+(2*5)+(1*8)=156
156 % 10 = 6
So 28971-58-6 is a valid CAS Registry Number.
InChI:InChI=1/C24H29FO6/c1-4-20-30-19-10-16-15-6-5-13-9-14(27)7-8-21(13,2)23(15,25)17(28)11-22(16,3)24(19,31-20)18(29)12-26/h4,7-9,15-17,19-20,26,28H,1,5-6,10-12H2,2-3H3/t15?,16?,17?,19-,20?,21?,22?,23?,24-/m1/s1
