209208-05-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209208-05-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,2,0 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 209208-05:
(8*2)+(7*0)+(6*9)+(5*2)+(4*0)+(3*8)+(2*0)+(1*5)=109
109 % 10 = 9
So 209208-05-9 is a valid CAS Registry Number.