66946-07-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66946-07-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,9,4 and 6 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 66946-07:
(7*6)+(6*6)+(5*9)+(4*4)+(3*6)+(2*0)+(1*7)=164
164 % 10 = 4
So 66946-07-4 is a valid CAS Registry Number.