97998-69-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97998-69-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,9,9 and 8 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 97998-69:
(7*9)+(6*7)+(5*9)+(4*9)+(3*8)+(2*6)+(1*9)=231
231 % 10 = 1
So 97998-69-1 is a valid CAS Registry Number.