665016-12-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 665016-12-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,5,0,1 and 6 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 665016-12:
(8*6)+(7*6)+(6*5)+(5*0)+(4*1)+(3*6)+(2*1)+(1*2)=146
146 % 10 = 6
So 665016-12-6 is a valid CAS Registry Number.