1219980-66-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1219980-66-1 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 0 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1219980-66:
(9*1)+(8*2)+(7*1)+(6*9)+(5*9)+(4*8)+(3*0)+(2*6)+(1*6)=181
181 % 10 = 1
So 1219980-66-1 is a valid CAS Registry Number.