4433-54-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4433-54-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,3 and 3 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4433-54:
(6*4)+(5*4)+(4*3)+(3*3)+(2*5)+(1*4)=79
79 % 10 = 9
So 4433-54-9 is a valid CAS Registry Number.