90566-53-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90566-53-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,5,6 and 6 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 90566-53:
(7*9)+(6*0)+(5*5)+(4*6)+(3*6)+(2*5)+(1*3)=143
143 % 10 = 3
So 90566-53-3 is a valid CAS Registry Number.
InChI:InChI=1/C22H27F3O4S/c1-11-6-13-14-8-16(24)15-7-12(26)4-5-19(15,2)21(14,25)17(27)9-20(13,3)22(11,29)18(28)30-10-23/h4-5,7,11,13-14,16-17,27,29H,6,8-10H2,1-3H3/t11-,13+,14?,16+,17+,19+,20+,21+,22+/m1/s1
90566-53-3Relevant articles and documents
17.BETA- (ALPHA-HYDROXY) -ESTERS OF ANDROSTANES AS INTERMEDIATES FOR THE PREPARATION FOR THE PREPARATION OF 17Β-FLUORINATED-ANDROSTANE ESTERS
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Page 31-32, (2008/06/13)
Process for the preparation of polyhalogenated steroids, in particular of androstanic fluoro derivatives corticosteroids by means of the formation of new androstanic S-hydroxy alkyl or aralkyl-17-carbothioate intermediates.