Aprepitant is a white to off-white crystalline solid, with a molecular weight of 534.43. It is practically insoluble in water. Aprepitant is sparingly soluble in ethanoland isopropyl acetate andslightly soluble in acetonitrile.CINVANTI (aprepitant) injectable emulsion is a sterile, opaque, off-white toamber liquid in a single-dose vialfor intravenous use. Eachvia lcontains 130 mgaprepitant in 18 mL of emulsion. Theemulsion a lso contains the following ina ctive ingredients: egg lecithin (2.61 g), dehydrated alcohol (0.52 g), sodium oleate(0.09 g), soybeanoil (1.74 g), sucrose (0.97 g), andwater for injection(12.18 g).