Someone asked about suitable acidity levels for that triple agonist compound along with the mix using benzyl alcohol plus acetic acid in water. It turns out these acylated sequences hold up best when kept mildly acidic to neutral, around 5 to 7, with the calculated point landing near 5.4 to 6.0. Below that the fatty chain tends to cause clumping instead of staying dissolved.
The version with 0.6 percent acetic acid comes out much more acidic, sitting near 2.8 to 3.0, while the alcohol itself barely shifts the number. That makes the whole solution roughly ten times more acidic than plain bacteriostatic water.
Technically the compound can go into acetic acid without disappearing right away, yet several issues show up. Solubility drops because the tail gets protonated, long term breakdown speeds up from the acid, and the low pH creates noticeable burning during use. Plain bacteriostatic water avoids all three problems and matches what most people reach for with this material. The stronger acid version only comes up for certain stubborn fragments that refuse to stay clear otherwise.