163893-43-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 163893-43-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,3,8,9 and 3 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 163893-43:
(8*1)+(7*6)+(6*3)+(5*8)+(4*9)+(3*3)+(2*4)+(1*3)=164
164 % 10 = 4
So 163893-43-4 is a valid CAS Registry Number.