1219981-13-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1219981-13-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,9,9,8 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1219981-13:
(9*1)+(8*2)+(7*1)+(6*9)+(5*9)+(4*8)+(3*1)+(2*1)+(1*3)=171
171 % 10 = 1
So 1219981-13-1 is a valid CAS Registry Number.