7799-55-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7799-55-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,9 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 7799-55:
(6*7)+(5*7)+(4*9)+(3*9)+(2*5)+(1*5)=155
155 % 10 = 5
So 7799-55-5 is a valid CAS Registry Number.