845666-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 845666-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,5,6,6 and 6 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 845666-71:
(8*8)+(7*4)+(6*5)+(5*6)+(4*6)+(3*6)+(2*7)+(1*1)=209
209 % 10 = 9
So 845666-71-9 is a valid CAS Registry Number.