844-55-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 844-55-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 4 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 844-55:
(5*8)+(4*4)+(3*4)+(2*5)+(1*5)=83
83 % 10 = 3
So 844-55-3 is a valid CAS Registry Number.