Table I.

Solubility of Erlotinib in Various Vehicles

Vehicle	Solubility (mg/mL)
Water	3.24 ± 0.45 (×10−3)
Oils
Labrafil M 2125 CS	6.90 ± 0.38
Labrafil M 1944 CS	3.88 ± 0.13
Capryol PGMC	6.11 ± 0.38
Labrafac Lipophile WL 1349	0.34 ± 0.01
Peceol	4.26 ± 0.57
Plurol	2.18 ± 0.19
Maisine 35-1	1.97 ± 0.13
Sunflower seed oil	0.13 ± 0.03
Castor oil	0.53 ± 0.08
Surfactants and co-surfactants
Tween 20	21.90 ± 1.54
Tween 80	12.31 ± 1.16
Span 20	3.47 ± 0.15
Brij 30	21.84 ± 3.04
Capryol 90	20.95 ± 1.83
Labrasol	64.65 ± 5.01
Transcutol HP	96.89 ± 2.35
PEG 400	84.42 ± 1.13

Each value represents the mean ± S.D. (n = 3)

PEG polyethylene glycol