21215-59-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21215-59-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,1 and 5 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21215-59:
(7*2)+(6*1)+(5*2)+(4*1)+(3*5)+(2*5)+(1*9)=68
68 % 10 = 8
So 21215-59-8 is a valid CAS Registry Number.