97942-31-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97942-31-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,9,4 and 2 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 97942-31:
(7*9)+(6*7)+(5*9)+(4*4)+(3*2)+(2*3)+(1*1)=179
179 % 10 = 9
So 97942-31-9 is a valid CAS Registry Number.