7707-45-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7707-45-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,0 and 7 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 7707-45:
(6*7)+(5*7)+(4*0)+(3*7)+(2*4)+(1*5)=111
111 % 10 = 1
So 7707-45-1 is a valid CAS Registry Number.