143740-28-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143740-28-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,7,4 and 0 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 143740-28:
(8*1)+(7*4)+(6*3)+(5*7)+(4*4)+(3*0)+(2*2)+(1*8)=117
117 % 10 = 7
So 143740-28-7 is a valid CAS Registry Number.