297142-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 297142-56-4 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, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 297142-56:
(8*2)+(7*9)+(6*7)+(5*1)+(4*4)+(3*2)+(2*5)+(1*6)=164
164 % 10 = 4
So 297142-56-4 is a valid CAS Registry Number.