Bill, I think the red flag here is "unpatented"
I did a search on DCA; it does seem to "kill" cancer cells. So does vitamin C, and capscicum( the heat in hot peppers). Both of those have the same claim, yet neither is used in cancer treatment.

There isn't much likelyhood that someone will pick it up and start any sort of significant study. The cancer research dollars are spread pretty thin, and this is the sort of thing that is not likely to see much main stream funding.

If it worked as described, I would agree; it sounds good. Almost too good to be true. That's usually the grind; they forget to mention all of the "less than encouraging" results.

just my opinion
Wayne