I have used a few different vendors for BAC including Hospira before they created the artificial shortage to raise prices.
I was able to purchase from Amazon before they stopped BAC sales and I still have a few bottles of 5ml Reconstitution Solution from Tusty.
I've gotten free WA10 claiming to be BAC from a grey-market pep dealer but do not trust it for anything that I wouldn't use same day I have a different vendors BA10 and had success with it reconstituting AOD as long as I use 1/3rd Acetic Acid with 2/3rds BAC.
Lately I purchased Parrox BAC and I am aware of its higher PH (within standards) I find it to be a quality product and for AOD or other PH sensitive peps a little AA can be useful.
I do get a good laugh out of the Hospira only crew that are purchasing research only peps yet will not accept BAC that can pass all the same tests they require for their peptides. Even though the cost of their Gold standard is 2-3 times the price of the other properly certified BAC products.