131981-62-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131981-62-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,8 and 1 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 131981-62:
(8*1)+(7*3)+(6*1)+(5*9)+(4*8)+(3*1)+(2*6)+(1*2)=129
129 % 10 = 9
So 131981-62-9 is a valid CAS Registry Number.