(19) United States (12) Patent Application Publication (10) Pub
US 20050181041A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2005/0181041 A1 Goldman (43) Pub. Date: Aug. 18, 2005 (54) METHOD OF PREPARATION OF MIXED Related US. Application Data PHASE CO-CRYSTALS WITH ACTIVE AGENTS (60) Provisional application No. 60/528,232, ?led on Dec. 9, 2003. Provisional application No. 60/559,862, ?led (75) Inventor: David Goldman, Portland, CT (US) on Apr. 6, 2004. Correspondence Address: Publication Classi?cation LEYDIG VOIT & MAYER, LTD (51) Int. Cl.7 ....................... .. A61K 31/56; A61K 38/00; TWO PRUDENTIAL PLAZA, SUITE 4900 A61K 9/64 180 NORTH STETSON AVENUE (52) US. Cl. ............................ .. 424/456; 514/179; 514/2; CHICAGO, IL 60601-6780 (US) 514/221 (73) Assignee: MedCrystalForms, LLC, Hunt Valley, (57) ABSTRACT MD This invention pertains to a method of preparing mixed phase co-crystals of active agents With one or more materials (21) Appl. No.: 11/008,034 that alloWs the modi?cation of the active agent to a neW physical/crystal form With unique properties useful for the delivery of the active agent, as Well as compositions com (22) Filed: Dec. 9, 2004 prising the mixed phase co-crystals. Patent Application Publication Aug. 18, 2005 Sheet 1 0f 8 US 2005/0181041 A1 FIG. 1a 214.70°C z.m."m.n... 206.98°C n..0ao 142 OJ/g as:20m=3: -0.8 -1.0 40 90 1:10 2110 Temperture (°C) FIG. 1b 0.01 as:22“.Km: 217 095 24221.4 39Jmum/Q -0.8 35 155 255 255 Temperture (°C) Patent Application Publication Aug.
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