205110-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205110-20-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,1,1 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 205110-20:
(8*2)+(7*0)+(6*5)+(5*1)+(4*1)+(3*0)+(2*2)+(1*0)=59
59 % 10 = 9
So 205110-20-9 is a valid CAS Registry Number.