Amazon BAC had pretty bad quality control. IIRC there was quality data published on BAC from Amazon and 9 out of 11 failed testing for pH or Benzyl alcohol content (some simultaneously).
You may be able to still find it under “reconstitution solution” on Amazon but I wouldn’t bother. Many other places you can get it cheaper and with far better quality control and testing.
Only 11 were tested keep in mind but seems like a decent enough reason to just to source elsewhere.