337-30-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 337-30-4 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 7 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 337-30:
(5*3)+(4*3)+(3*7)+(2*3)+(1*0)=54
54 % 10 = 4
So 337-30-4 is a valid CAS Registry Number.