76943-81-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 76943-81-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,9,4 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 76943-81:
(7*7)+(6*6)+(5*9)+(4*4)+(3*3)+(2*8)+(1*1)=172
172 % 10 = 2
So 76943-81-2 is a valid CAS Registry Number.