21256-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21256-71-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,5 and 6 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21256-71:
(7*2)+(6*1)+(5*2)+(4*5)+(3*6)+(2*7)+(1*1)=83
83 % 10 = 3
So 21256-71-3 is a valid CAS Registry Number.
InChI:InChI=1/C30H42O9/c1-15-24(33)25(34)26(35)27(38-15)39-18-8-10-28(2)17(12-18)5-6-20-21(28)13-22(31)29(3)19(9-11-30(20,29)36)16-4-7-23(32)37-14-16/h4,7,12,14-15,18-22,24-27,31,33-36H,5-6,8-11,13H2,1-3H3/t15?,18-,19+,20?,21?,22+,24+,25?,26?,27+,28-,29-,30-/m0/s1