5553-63-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5553-63-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,5 and 3 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 5553-63:
(6*5)+(5*5)+(4*5)+(3*3)+(2*6)+(1*3)=99
99 % 10 = 9
So 5553-63-9 is a valid CAS Registry Number.