53557-99-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 53557-99-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,5,5 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 53557-99:
(7*5)+(6*3)+(5*5)+(4*5)+(3*7)+(2*9)+(1*9)=146
146 % 10 = 6
So 53557-99-6 is a valid CAS Registry Number.