I am afraid I have used Perplexity in private tab or whatever, as I can't find that thread in my list.
I doubt this help finding that paper, if What I (think) to remember was:
- I looked into how to detect possible differences in pharma vs China rHGH
- Perplexity's answer was the 3D structure of the molecule, which led me to the term of "folding", I was previously unaware of.
- it also led me to different kinds of analysis than HPLC-MS, namely CD (I think...)
- the paper talked about comparing rHGH from Chinese facilities and Western ones.
- That the paper was rather recent, likely 2018 or later.
- It had authors with Chinese names, but there might also have been Western names on it. I just remember that, because my first thought was this was a doctored paper by the Chinese, but after a first glance it seemed legit.
- It might have been in relation to administering rHGH to children, but I could be mistaken, as my today's search results often had that as a focus.
I will keep looking through my browsing history, but I use so many devices and browsers, this will be like finding a needle in the haystack...
Maybe the above recollection will help to locate that paper, at a first glance it seemed like a key answer in the question of Pharma vs Chinese rHGH.
Sorry, that is all I present for now.