19526-09-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19526-09-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,2 and 6 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 19526-09:
(7*1)+(6*9)+(5*5)+(4*2)+(3*6)+(2*0)+(1*9)=121
121 % 10 = 1
So 19526-09-1 is a valid CAS Registry Number.
InChI:InChI=1/C31H42N4O4/c1-20(2)18-25-29(36)32-17-16-22-12-14-24(15-13-22)39-28(21(3)4)27(31(38)33-25)34-30(37)26(35(5)6)19-23-10-8-7-9-11-23/h7-17,20-21,25-28H,18-19H2,1-6H3,(H,32,36)(H,33,38)(H,34,37)/b17-16-
19526-09-1Relevant articles and documents
Total synthesis of sanjoinine A (frangufoline)
Xiao, Dong,East, Stephen P.,Joullie, Madeleine M.
, p. 9631 - 9632 (1998)
Sanjoinine A (1) was synthesized from a 14-membered cyclopeptide prepared from a Garner aldehyde derived from D-serine. The key steps in the synthesis were the catalytic asymmetric reduction of ketone 2(b) and the final removal of the Boc group.