After reading this thread, I am inclined to recommend ALD-52 for a friend of mine. However, I am unable to find any way to determine vendor claims; I have chromatographic methods for (say) LSD and can purchase standards, but I can't find a standard for ALD-52.

I have GC and LC on hand. Looks like the boiling point is high enough it's not going to work on GC. I don't have mass spec on LC; the diode array I use will get a spectrum... but nothing to compare it with.

No NMR; I might have FT/IR, but I'd need pure compound (versus blotters), and quite a bit of it.

Any suggestions or recommendations on proving a sample of ALD-52 is actually what it claims to be? Anyone know of a company selling an analytical standard?