665019-04-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 665019-04-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,5,0,1 and 9 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 665019-04:
(8*6)+(7*6)+(6*5)+(5*0)+(4*1)+(3*9)+(2*0)+(1*4)=155
155 % 10 = 5
So 665019-04-5 is a valid CAS Registry Number.