81513-97-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81513-97-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,1 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81513-97:
(7*8)+(6*1)+(5*5)+(4*1)+(3*3)+(2*9)+(1*7)=125
125 % 10 = 5
So 81513-97-5 is a valid CAS Registry Number.