143423-45-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143423-45-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,4,2 and 3 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 143423-45:
(8*1)+(7*4)+(6*3)+(5*4)+(4*2)+(3*3)+(2*4)+(1*5)=104
104 % 10 = 4
So 143423-45-4 is a valid CAS Registry Number.