3220-30-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3220-30-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,2,2 and 0 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 3220-30:
(6*3)+(5*2)+(4*2)+(3*0)+(2*3)+(1*0)=42
42 % 10 = 2
So 3220-30-2 is a valid CAS Registry Number.