97804-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97804-57-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,8,0 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 97804-57:
(7*9)+(6*7)+(5*8)+(4*0)+(3*4)+(2*5)+(1*7)=174
174 % 10 = 4
So 97804-57-4 is a valid CAS Registry Number.