18742-43-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18742-43-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,7,4 and 2 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 18742-43:
(7*1)+(6*8)+(5*7)+(4*4)+(3*2)+(2*4)+(1*3)=123
123 % 10 = 3
So 18742-43-3 is a valid CAS Registry Number.