667909-66-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667909-66-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,9,0 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 667909-66:
(8*6)+(7*6)+(6*7)+(5*9)+(4*0)+(3*9)+(2*6)+(1*6)=222
222 % 10 = 2
So 667909-66-2 is a valid CAS Registry Number.