7712-73-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7712-73-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,1 and 2 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7712-73:
(6*7)+(5*7)+(4*1)+(3*2)+(2*7)+(1*3)=104
104 % 10 = 4
So 7712-73-4 is a valid CAS Registry Number.