Thermoanalytical studies, synthesis and characterization of the solid co-crystals of (S)-ketoprofen with some co-formers

• Grant number: 13/14884-8
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): September 01, 2013
• Effective date (End): February 28, 2015
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Gilbert Bannach
• Grantee: Laura Teófilo Ferreira
• Host Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil

Abstract

This proposed research is part of project No. 2012/21450-1 FAPESP and aiming at the synthesis and characterization of solid co-crystals obtained from ketoprofen and co-formers, DL-panthenol, succinic acid, and salicylic acid. This project focuses on the synthesis and characterization of solid-state co-crystals obtained from some anti-inflammatory and co-formers. The co-crystals will be obtained through mechanochemical methods (solvent assisted by grinding), with the aid of a ball mill, and also by crystallization in solution, by using solvents and/or solvent mixtures. The characterization of co-crystals will be made through the following experiments: Differential scanning calorimetry (DSC), polarized light term microscopy (PLTM), absorption spectroscopy in the infrared region (FTIR), and X-ray diffraction techniques (powder method and single crystal). As it is a technique rarely used in Brazil, the PLTM studies will be developed in partnership with the Department of Chemistry, University of Coimbra, Portugal, with the collaboration of Prof. Dr. Ricardo Esteves Antonio de Castro and Profª. Drª. Ermelinda Maria da Silva Eusébio. It is expected this way to obtain co-crystals capable of promoting an improvement in the physicochemical properties of the anti-inflammatory drugs used for this study.(AU)