220231-14-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220231-14-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,2,3 and 1 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 220231-14:
(8*2)+(7*2)+(6*0)+(5*2)+(4*3)+(3*1)+(2*1)+(1*4)=61
61 % 10 = 1
So 220231-14-1 is a valid CAS Registry Number.