221312-35-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221312-35-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,3,1 and 2 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 221312-35:
(8*2)+(7*2)+(6*1)+(5*3)+(4*1)+(3*2)+(2*3)+(1*5)=72
72 % 10 = 2
So 221312-35-2 is a valid CAS Registry Number.