31081-11-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31081-11-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,0,8 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 31081-11:
(7*3)+(6*1)+(5*0)+(4*8)+(3*1)+(2*1)+(1*1)=65
65 % 10 = 5
So 31081-11-5 is a valid CAS Registry Number.