2520-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2520-21-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,2 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2520-21:
(6*2)+(5*5)+(4*2)+(3*0)+(2*2)+(1*1)=50
50 % 10 = 0
So 2520-21-0 is a valid CAS Registry Number.
InChI:InChI=1/C24H36N2O9S/c1-13(33-3)17(25-22(31)15-8-6-10-26(15)2)21-19(29)18(28)20(30)24(35-21)36-12-11-34-23(32)14-7-4-5-9-16(14)27/h4-5,7,9,13,15,17-21,24,27-30H,6,8,10-12H2,1-3H3,(H,25,31)/t13-,15+,17-,18-,19-,20+,21+,24+/m1/s1