663203-67-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663203-67-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,2,0 and 3 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 663203-67:
(8*6)+(7*6)+(6*3)+(5*2)+(4*0)+(3*3)+(2*6)+(1*7)=146
146 % 10 = 6
So 663203-67-6 is a valid CAS Registry Number.