5-Amino-1MQ is not a peptide at all, is it?

5-Amino-1MQ is filed under "adjacent" on the site, which I assume is doing exactly the work I think it is. It is a small molecule, not a peptide.

Correct, and the category name is the site being honest about it rather than quietly filing it under peptides because that is where the traffic is.

It is a small-molecule NNMT inhibitor. It is sold in the same shops, to the same people, alongside actual peptides, which is the only sense in which it belongs on the site at all — and "adjacent" says exactly that.

Worth noticing generally: quite a lot of what is sold as "peptides" in this market is not. Methylene blue is a dye. NAD+ is a nucleotide coenzyme. The word has become a market segment rather than a chemical class.

The word as market segment is a good way to put it. Thanks.