Ok, so that was a little negative.

Let me give you some advice you
can use...
My most fertile sources for new (and failry balanced!) alchemical preparations are:
- Dragon magazine: if you know someone with a subscription, try to borrow issues 279, 280(!), 285, 291, 298, 300 and 301(!). There's a few items in other issues, but these cover about 70 interesting and useful items. (280 and 301 alone cover almost 50)
- Spells & Spellcraft, Kingdoms of Kalamar PHB, Quintessential Elf and Wizard, van Richten's Arsenal, Tome&Blood and Traps&Treachery all have some nice new alchemical items
- Green Ronin's new Drow sourcebook "Plot And Poison" has a number of new alchemical items and poisons. However, it also has a nice rule of thumb for pricing new alchemical items that duplicate spell effects. Essentially, the market price comes out to 2.1 times the market price for the equivalent magical item .
-
Stormkeep has a good online list of
Alchemical Concoctions, including Dragon #280 and a bunch of home-brewn ones (unpublished, but very well-balanced).
-
Crystal Keep also has an excellent online list in their
Index of Equipment, including from Dragon issues and many of the sources I listed above.