R-ALA and Acetyl L-Carnitine?

I’m looking for high-quality r-ALA and acetyl l-carnitine supplements. The only two companies that I normally buy nutritional supplements from do not sell either product, and I am extremely trepeditious about buying from supplement companies that I am not familiar with. Can anyone reccommend good products?

I recently purchased an r-ALA supplement from SAN. It’s a good value, but it contains a chemical that I don’t want to continue ingesting: titanium dioxide. So, whatever supplement I purchase next should not contain this additive.

I order those supplements regularly online. Note that Glucorell R is R-ALA. No titanium dioxide.

Another question: is “R-Lipoic Acid” the same as R-ALA??