81503-75-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81503-75-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,0 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81503-75:
(7*8)+(6*1)+(5*5)+(4*0)+(3*3)+(2*7)+(1*5)=115
115 % 10 = 5
So 81503-75-5 is a valid CAS Registry Number.