22-12-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22-12-8 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 2 and 2 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 22-12:
(4*2)+(3*2)+(2*1)+(1*2)=18
18 % 10 = 8
So 22-12-8 is a valid CAS Registry Number.