Online Dissolution Testing of Roxatidine Acetate Hydrochloride Extended-Release Capsules

Importance of the Topic

Online dissolution testing plays a vital role in drug formulation development, quality control, and bioequivalence studies. Traditional manual sampling and analysis procedures are time-consuming, labor intensive, and subject to human error. Automating these workflows enhances reproducibility, efficiency, and data integrity.

Objectives and Study Overview

This study demonstrates an online dissolution testing workflow for roxatidine acetate hydrochloride extended-release capsules using the Nexera FV system. A comparative analysis highlights time savings and process improvements versus conventional methods.

Methodology and Instrumentation

The dissolution test employed the paddle method with 900 mL purified water at 37 °C and 50 rpm, sampling at predetermined intervals over 480 minutes. Sample preparation—including filtration, dilution, and internal standard addition—was automated. HPLC analysis utilized a Shim-pack VP-ODS column (150 mm×4.6 mm, 5 μm) with a water/acetonitrile/triethylamine/acetic acid mobile phase (340:60:2:1), 0.8 mL/min flow, 40 °C column temperature, 20 μL injection, and UV detection at 274 nm.

Main Results and Discussion

System suitability testing (n=6, 42 mg/L standard) met Japanese Pharmacopoeia criteria: retention time RSD 0.05 %, peak area RSD 0.15 %, theoretical plates >7360, symmetry factor 1.15. Dissolution profiles showed 36–38 % release at 60 min and ≥81 % at 480 min across all vessels, complying with pharmacopeial tolerances. Automated processing reduced total workflow time by 35 % (12 hours vs 18.5 hours).

Benefits and Practical Applications

Integrating online sampling, dilution, analysis, and report generation streamlines dissolution testing, minimizes manual interventions, and boosts laboratory throughput. The approach ensures consistent data quality and supports regulatory compliance.

Future Trends and Opportunities

Advances may include integration with laboratory information management systems, real-time data analytics, and extension to various dosage forms. Further development could enable process analytical technology (PAT) applications and real-time release testing.

Conclusion

The Nexera FV platform offers a robust, automated solution for online dissolution testing of extended-release formulations. It delivers significant time savings, high reproducibility, and simplified workflows compared to conventional methods.

References

Japanese Pharmacopoeia, 18th Edition; Shimadzu Corporation product documentation.