81349-71-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81349-71-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,4 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81349-71:
(7*8)+(6*1)+(5*3)+(4*4)+(3*9)+(2*7)+(1*1)=135
135 % 10 = 5
So 81349-71-5 is a valid CAS Registry Number.