Innovation Pharmaceuticals Inc (IPIX)

[PlentyParanoid]

Yes, it is true that prurisol is a prodrug of abacavir, a HIV drug. But that is missing the point. The active moiety of prurisol is not abacavir but prurisol or possible intermediate molecule between prurisol and abacavir (I am too lazy to check it now). Sixpence knows this. Also, it should be obvious that one can not patent old compounds - the legal concept of prior art prevents it. IPIX has a patent on prurisol. Sixpence knows this also.