81342-44-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81342-44-1 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, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81342-44:
(7*8)+(6*1)+(5*3)+(4*4)+(3*2)+(2*4)+(1*4)=111
111 % 10 = 1
So 81342-44-1 is a valid CAS Registry Number.