209667-67-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209667-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,6,6 and 7 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 209667-67:
(8*2)+(7*0)+(6*9)+(5*6)+(4*6)+(3*7)+(2*6)+(1*7)=164
164 % 10 = 4
So 209667-67-4 is a valid CAS Registry Number.