57704-05-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57704-05-9 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, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 57704-05:
(7*5)+(6*7)+(5*7)+(4*0)+(3*4)+(2*0)+(1*5)=129
129 % 10 = 9
So 57704-05-9 is a valid CAS Registry Number.