330-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 330-99-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,3 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 330-99:
(5*3)+(4*3)+(3*0)+(2*9)+(1*9)=54
54 % 10 = 4
So 330-99-4 is a valid CAS Registry Number.