97789-57-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97789-57-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,7,8 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 97789-57:
(7*9)+(6*7)+(5*7)+(4*8)+(3*9)+(2*5)+(1*7)=216
216 % 10 = 6
So 97789-57-6 is a valid CAS Registry Number.