166664-07-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166664-07-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,6,6 and 4 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 166664-07:
(8*1)+(7*6)+(6*6)+(5*6)+(4*6)+(3*4)+(2*0)+(1*7)=159
159 % 10 = 9
So 166664-07-9 is a valid CAS Registry Number.