Can you do it? Sure. Are you going to get an infection from it? Probably not. Is it riskier than having a compounding pharmacy doing it the right way? Absolutely, and in a meaningful amount of risk. The type of infections you get from contaminated injections are not something you want to deal with
Doesn't mean it's safe. Lots of people trade off a small risk of harm for immediate benefits. Hell, look at alcohol.
What you're describing is a adequate for immediate use. Not use and storage.
Wiping the bottle before use is just standard practice to prevent contamination after compounding.
From a quick look earlier this week that's not easy, and I've dealt with research peptide sites before. I was hoping to try one of the ones that's newer than Semaglutide for my IBS - that worked really well the later half of the week but not the first few days where it made things worse. I don't need to lose weight but I'd love to get that under control better.