97142-42-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97142-42-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,1,4 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 97142-42:
(7*9)+(6*7)+(5*1)+(4*4)+(3*2)+(2*4)+(1*2)=142
142 % 10 = 2
So 97142-42-2 is a valid CAS Registry Number.