143943-74-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143943-74-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,9,4 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 143943-74:
(8*1)+(7*4)+(6*3)+(5*9)+(4*4)+(3*3)+(2*7)+(1*4)=142
142 % 10 = 2
So 143943-74-2 is a valid CAS Registry Number.