1220021-22-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1220021-22-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,0,0,2 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1220021-22:
(9*1)+(8*2)+(7*2)+(6*0)+(5*0)+(4*2)+(3*1)+(2*2)+(1*2)=56
56 % 10 = 6
So 1220021-22-6 is a valid CAS Registry Number.