4631-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4631-55-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,3 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 4631-55:
(6*4)+(5*6)+(4*3)+(3*1)+(2*5)+(1*5)=84
84 % 10 = 4
So 4631-55-4 is a valid CAS Registry Number.