I'd like to see a listing of good perparation web addresses. Here's one that has been mentioned here in context several time and has served me in the
past: http://www.prepchem.com/
It will encourage you to add syntheses and I don't know whether and how well those are vetted. The one's I've used corresponded with Vogel's and other
sources pretty well.
"When you let the dumbasses vote you end up with populism followed by autocracy and getting back is a bitch." Plato (sort of)