663161-05-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663161-05-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,1,6 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 663161-05:
(8*6)+(7*6)+(6*3)+(5*1)+(4*6)+(3*1)+(2*0)+(1*5)=145
145 % 10 = 5
So 663161-05-5 is a valid CAS Registry Number.