81342-13-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81342-13-4 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 2 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81342-13:
(7*8)+(6*1)+(5*3)+(4*4)+(3*2)+(2*1)+(1*3)=104
104 % 10 = 4
So 81342-13-4 is a valid CAS Registry Number.