2209-69-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2209-69-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,0 and 9 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2209-69:
(6*2)+(5*2)+(4*0)+(3*9)+(2*6)+(1*9)=70
70 % 10 = 0
So 2209-69-0 is a valid CAS Registry Number.