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Claims for Patent: 7,786,118

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Claims for Patent: 7,786,118

Title:Pharmaceutical formulations of antineoplastic agents
Abstract:In its several embodiments, this invention discloses a pharmaceutical formulation comprising at least one antineoplastic agent or a pharmaceutically acceptable salt thereof, and at least one dissolution enhancing agent sufficient to substantially dissolve said at least one antineoplastic agent in at least one aqueous diluent, wherein said dissolution enhancing agent is urea, L-histidine, L-threonine, L-asparagine, L-serine, L-glutamine or mixtures thereof; a lyophilized powder comprising said pharmaceutical formulation, and articles of manufacture thereof.
Inventor(s): Ugwu; Sydney (Gurnee, IL), Radhakrishnan; Vinay (Thousand Oaks, CA), Ihnat; Peter M. (Brooklyn, NY), Witchey-Lakshmanan; Leonore C. (Piscataway, NJ)
Assignee: Schering Corporation (Kenilworth, NJ)
Application Number:12/403,113
Patent Claims: 1. A pharmaceutical formulation comprising temozolomide or a pharmaceutically acceptable salt thereof, at least one aqueous diluent, and L-threonine.

2. The pharmaceutical formulation according to claim 1, further comprising: hydrochloric acid, a citrate buffer, a polysorbate, and mannitol.

3. The pharmaceutical formulation according to claim 2, further comprising an aqueous dilutent.

4. The pharmaceutical formulation according to claim 2, wherein said Temozolomide is present in an amount ranging from 4 wt % to 16 wt % and said L-threonine is present in an amount ranging from 8 wt % to 20 wt %, and further comprising: hydrochloric acid in an amount ranging from 4 wt % to 8 wt %, a citrate buffer(s) in an amount ranging from 15 wt % to 28 wt %, a polysorbate in an amount ranging from 4 wt % to 16 wt %, and mannitol in an amount ranging from 40 wt % to 56 wt %.

5. The pharmaceutical formulation according to claim 2, wherein said Temozolomide is present in an amount of about 8 wt %, said L-threonine is present in an amount of about 13 wt %, said hydrochloric acid is present in an amount of about 5 wt %, said citrate buffer is present in an amount of about 19 wt %, said polysorbate is present in an amount of about 49 wt %, and said mannitol is present in an amount of about 48 wt %.

6. The pharmaceutical formulation according to claim 5, wherein the pH of said formulation ranges from about 3.0 to about 4.5.
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