206666-54-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 206666-54-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,6,6,6 and 6 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 206666-54:
(8*2)+(7*0)+(6*6)+(5*6)+(4*6)+(3*6)+(2*5)+(1*4)=138
138 % 10 = 8
So 206666-54-8 is a valid CAS Registry Number.