Lithium diisopropylamide
2.0 M in heptane/THF/ethylbenzene
1.5 M in cyclohexane/tetrahydrofuran (1.5M LDA.THF solution in cyclohexane)
10 wt. % suspension in hexanes,0.8M
30 wt. % suspension in mineral oil

Very  useful, relatively non-nucleophilic strong base used for generation of carbanions. Can function as single electron donor or as hydride donor. Commercially available as solid, suspended in hexanes (10 wt%), and as stabilised solns. in THF-hydrocarbon mixt.