57704-66-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57704-66-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,0 and 4 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 57704-66:
(7*5)+(6*7)+(5*7)+(4*0)+(3*4)+(2*6)+(1*6)=142
142 % 10 = 2
So 57704-66-2 is a valid CAS Registry Number.