663201-65-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663201-65-8 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 1 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 663201-65:
(8*6)+(7*6)+(6*3)+(5*2)+(4*0)+(3*1)+(2*6)+(1*5)=138
138 % 10 = 8
So 663201-65-8 is a valid CAS Registry Number.