81306-31-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81306-31-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,0 and 6 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81306-31:
(7*8)+(6*1)+(5*3)+(4*0)+(3*6)+(2*3)+(1*1)=102
102 % 10 = 2
So 81306-31-2 is a valid CAS Registry Number.