206123-17-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 206123-17-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,6,1,2 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 206123-17:
(8*2)+(7*0)+(6*6)+(5*1)+(4*2)+(3*3)+(2*1)+(1*7)=83
83 % 10 = 3
So 206123-17-3 is a valid CAS Registry Number.