7577-45-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7577-45-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,7 and 7 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 7577-45:
(6*7)+(5*5)+(4*7)+(3*7)+(2*4)+(1*5)=129
129 % 10 = 9
So 7577-45-9 is a valid CAS Registry Number.