31982-40-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31982-40-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,9,8 and 2 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 31982-40:
(7*3)+(6*1)+(5*9)+(4*8)+(3*2)+(2*4)+(1*0)=118
118 % 10 = 8
So 31982-40-8 is a valid CAS Registry Number.