434-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 434-71-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,3 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 434-71:
(5*4)+(4*3)+(3*4)+(2*7)+(1*1)=59
59 % 10 = 9
So 434-71-9 is a valid CAS Registry Number.