4909-66-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4909-66-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,9,0 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 4909-66:
(6*4)+(5*9)+(4*0)+(3*9)+(2*6)+(1*6)=114
114 % 10 = 4
So 4909-66-4 is a valid CAS Registry Number.