42143-87-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42143-87-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,1,4 and 3 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 42143-87:
(7*4)+(6*2)+(5*1)+(4*4)+(3*3)+(2*8)+(1*7)=93
93 % 10 = 3
So 42143-87-3 is a valid CAS Registry Number.