99506-53-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99506-53-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,5,0 and 6 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 99506-53:
(7*9)+(6*9)+(5*5)+(4*0)+(3*6)+(2*5)+(1*3)=173
173 % 10 = 3
So 99506-53-3 is a valid CAS Registry Number.