205117-09-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205117-09-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,1,1 and 7 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 205117-09:
(8*2)+(7*0)+(6*5)+(5*1)+(4*1)+(3*7)+(2*0)+(1*9)=85
85 % 10 = 5
So 205117-09-5 is a valid CAS Registry Number.