297142-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 297142-71-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,7,1,4 and 2 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 297142-71:
(8*2)+(7*9)+(6*7)+(5*1)+(4*4)+(3*2)+(2*7)+(1*1)=163
163 % 10 = 3
So 297142-71-3 is a valid CAS Registry Number.