CRYSTAL MODIFICATION OF IRBESARTAN BY SPHERICAL AGGLOMERATION TO IMPROVE MICROMERITICS AND DISSOLUTION RATE Authors: Nijhawan M , ALETI R, GUNNAM S, JIDIGE B, NEERUDE S AND RAMBAKKA N
ABSTRACT
In the present study an attempt was made to prepare spherical agglomerates of Irbesartan, a BCS
class II to improve its physicochemical and bulk properties. Irbesartan spherical agglomerates were
prepared by solvent change method. It involves good solvent, poor solvent and bridging liquid
dimethylformamide (DMF), water, toluene respectively.The prepared spherical agglomerates were
evaluated for micromeritic properties (bulk density,tapped density, angle of repose, Hausner's
ratio, and Carr's index). The agglomerates were characterized by Fourier transform infrared
spectroscopy (FTIR), powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM),
solubilityandparticle size. The results of micromeritic studies suggested that the agglomerates
showed improved flow properties due to spherical shape and bigger size of agglomerates. The
FTIR studies indicated that there is no strong interaction at molecular level. PXRD results
suggested that no alteration in the crystal structure of Irbesartan, but the crystallinity being
modified. Spherical agglomerates of Irbesartan showed increased solubility and higher dissolution
rate compared to Irbesartan.
Keywords: Spherical agglomerates, FTIR, PXRD, Crystallinity, Solubility Publication date: 01/05/2025 https://ijbpas.com/pdf/2025/May/MS_IJBPAS_2025_9016.pdfDownload PDFhttps://doi.org/10.31032/IJBPAS/2025/14.5.9016