6662-30-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6662-30-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,6 and 2 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 6662-30:
(6*6)+(5*6)+(4*6)+(3*2)+(2*3)+(1*0)=102
102 % 10 = 2
So 6662-30-2 is a valid CAS Registry Number.