108981-31-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 108981-31-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,9,8 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 108981-31:
(8*1)+(7*0)+(6*8)+(5*9)+(4*8)+(3*1)+(2*3)+(1*1)=143
143 % 10 = 3
So 108981-31-3 is a valid CAS Registry Number.