1980-31-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1980-31-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,8 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1980-31:
(6*1)+(5*9)+(4*8)+(3*0)+(2*3)+(1*1)=90
90 % 10 = 0
So 1980-31-0 is a valid CAS Registry Number.