I ran across a new site that I thought I’d share here. It’s https://aesis.health/. It contains a library of common peptides that includes CAS number, molecular weight, half life, pharmacokinetics graphs, target receptors, and has links to pubchem clinical studies. It appears to be pretty handy and it’s free & requires no login. You can set up an account and track your research more specifically (also still free); I haven’t done that yet so I can’t speak to that, but it seems like a nice resource. I am not the creator nor do I know the creator, but if you want to give him or her feedback, you can on Reddit.