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In recent years, indole derivatives have acquired conspicuous significance due to their wide spectrum of biological activities-antibacterial, antiviral, and anticonvulsant. This compound is derived from naturally grown plants. Therefore, synthesis of a novel "3-(Naphthalen-1-ylimino) indoline-2-one" compound ( 2 ) and its analysis using UPLC systems along with antimicrobial assessment was the aim of the current study. Isatin was used as a parent drug for synthesizing compound ( 2 ). Liquid Chromatographic analysis was performed using a C18 BEH column (1.7 µm 2.1 × 50 mm) by UPLC systems. Degradation studies were carried out to see whether acid, base, thermal, and oxidizing agents had any impact on the synthesized molecule in stress conditions (100 °C). A lipid-based self-nanoemulsifying formulation was developed and selectivity, specificity, recovery, accuracy, and precision were measured as part of the UPLC system's validation process. Antimicrobial studies were conducted using gram-positive and gram-negative bacteria. The standard samples were run with a concentration range of 5.0-100.0 µg/mL using the isocratic mobile phase comprising of methanol/water (70/30 % v / v ) at 234 nm; good linearity (R 2 = 0.9998) was found. The lower limits of detection (LOD) and quantitation (LOQ) of the method were found to be 0.81 µg/mL and 2.5 µg/mL, respectively. The coefficients of variation were found to be less than 2%. The antimicrobial study suggests that compound ( 2 ) has a substantial growth effect against gram-negative bacteria. It was successfully synthesized and applied to measure the concentrations in lipid-based dosage form, along with potent antimicrobial activities.

Analysis of a “3-(Naphthalen-1-ylimino)indolin-2-one” Compound and Its Antimicrobial Assessment Using Lipid-Based Self-Nanoemulsifying Formulations