Novel Aceclofenac Cocrystals with l-Cystine: Virtual Coformer Screening, Mechanochemical Synthesis, and Physicochemical Investigations.

Aim: Current work focuses on the improvement of the solubility and dissolution of ACF by the cocrystal approach.

Background: Aceclofenac (ACF) is one of the commonly used Nonsteroidal Anti-Inflammatory Drug (NSAID) representing a variety of therapeutic applications including management of pain, inflammation, rheumatoid arthritis, and osteoarthritis, . But very low solubility and dissolution rate of ACF compromise its therapeutic utility. Now a day's cocrystallization technique has emerged as a novel technique for modulation of the said problems.

Objective: The Specific objectives of this research work were mechanochemical synthesis, characterization, and performance evaluation of aceclofenac cocrystal.

Methods: ACF was screened with various pharmaceutically acceptable coformers (Selected from GRAS and EAFUS list) using MOPAC software and physical screening method to find out novel cocrystals of ACF with enhanced solubility and dissolution rate. Novel cocrystals (multi-component crystalline solid) of ACF with l-cystine were prepared by a neat grinding method and by liquid assisted grinding method. The synthesized cocrystals (ACF-l-CYS NG and ACF-l-CYS LAG) were characterized carefully by Differential Scanning Calorimetry (DSC), Infrared Spectroscopy (IR), and Powder XRay Diffraction (PXRD) to verify the formation of the cocrystals. Pharmaceutically significant properties such as powder dissolution rate, solubility, and stability of the prepared cocrystals were evaluated.

Results: Compared to pure ACF, the prepared cocrystals showed superior solubility and dissolution rate. The prepared cocrystals were found to be stable and non-hygroscopic under study conditions.

Conclusion: The cocrystallization technique was successfully utilized to increase the solubility and dissolution rate of aceclofenac.