54553-18-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54553-18-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,5,5 and 3 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 54553-18:
(7*5)+(6*4)+(5*5)+(4*5)+(3*3)+(2*1)+(1*8)=123
123 % 10 = 3
So 54553-18-3 is a valid CAS Registry Number.