81371-99-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81371-99-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,7 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81371-99:
(7*8)+(6*1)+(5*3)+(4*7)+(3*1)+(2*9)+(1*9)=135
135 % 10 = 5
So 81371-99-5 is a valid CAS Registry Number.