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Open research questions in Analytical Methods in Pharmaceuticals

25 unresolved questions extracted from the limitations and future-work sections of 676 Analytical Methods in Pharmaceuticals papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The successful development and analytical validation of this HPMC-based matrix tablet open multiple advanced translational pathways. Given the well-documented circadian rhythm of cardiovascular emergencies— specifically the dangerous spike in blood pressure and myocardial infarctions during the early morning hours— future research could pivot this SR formulation toward Chronotherapeutic Drug Delivery. By modifying the outer polymer coatings, the system could be engineered as a delayed-pulsatile release tablet taken at bedtime, programmed to release its maximum Propranolol load just prior to awakening. Furthermore, transitioning from traditional wet granulation to advanced Quality by Design (QbD) optimization, combined with continuous © 2026 The Author(s). Published by IJCOPE Journal. Website: https://ijcope.org/ 12 International Journal of Creative and Open Research in Engineering and Management ISSN: 3108-1754 (Online) Volume 02 Issue 05 May-2026 | Impact Factor: 3.5 manufacturing paradigms or 3D pharmaceutical printing, could allow for highly personalized dosing modifications. Most immediately, the robust in-vitro kinetic data acquired here sets the foundational baseline required to establish a Level A In Vitro-In Vivo Correlation (IVIVC), paving the way for targeted human pharmacokinetic trials and regulatory bioequivalence submissions.

    Method Development and Validation of Sustained Release Tablets of Propranolol Hydrochloride · 2026 · DOI

  • Although spectral resolution is significantly improved by the second-derivative transformation at Δλ = 60 nm, the derivative process may increase instrumental noise and reduce the signal-to-noise ratio, particularly at low analyte concentrations. As a result, maintaining sensitivity and accuracy requires careful adjustment of the instrument settings.

    Eco-friendly second-derivative synchronous fluorescence method for the determination of empagliflozin and sitagliptin in tablets and plasma samples · 2026 · DOI

  • in FDCs, including QbD-driven, application By advancing this technique for a variety of processes, green stability chemistry, indicating assays, and complex formulations like nano and lipid-based dosage forms, there are opportunities to develop and validate analytical methods for both single and simultaneous drug quantification in the future. Process Analytical Technology (PAT) and real-time release testing are used to optimise columns and integrate spectroscopic or at-line/online HPLC with chemometrics for continuous batch production. More reliable method development and validation by RP-HPLC are needed due to the growing number of diseases and the demanding nature of complicated formulation. CONFLICT OF INTERSECT The author declares no conflict of interest. No financial support or relationship with entities that could influence the work were received. ACKNOWLEDGEMENTS The Hygia Institute of Pharmaceutical Education and Research's Department of Pharmaceutical Chemistry is acknowledged by the author for supplying the materials and literature database that were necessary for this review. REFERENCES 1. Madhavai S. A Review on Chromatographic Techniques and their Application in Analysis of Pharmaceuticals. International Journal of Novel Research and Development. 2024 Feb;9(2):580–90. 2. Snyder LR, Kirkland JK, Glajch LJ. Practical HPLC Method Development. Second. New INTERNATIONAL JOURNAL OF PHARMACEUTICAL SCIENCES 2278 | P a g e Syed Tahir Hussain Rizvi, Int. J. of Pharm. Sci., 2026, Vol 4, Issue 5, 2265-2283 | Review York: John Wiley & Sons, Inc.; 1997. doi:10.1002/9781118592014 3. Sailaja A, Nagamallika G.

    Analytical Method Development and Validation Methods for Estimation of Drugs in Pharmaceutical Dosage Forms: A Review · 2026 · DOI

  • The gel formulation showed 3% thermal and photolytic degradation compared to 5% and 4% in bulk drug, suggesting excipient stabilization; the specific excipient(s) responsible for this protection and their interaction mechanisms with Itraconazole have not been isolated or characterized through forced degradation studies with individual excipient components.

    Green chemistry integrated quality by design based RP-HPLC method for analysis of Itraconazole in pharmaceutical formulations · 2026 · DOI

  • The ComplexGAPI assessment identified liquid waste generation (106 mL per analysis) as a red zone for the RP-HPLC Itraconazole method; specific solvent recycling or reduced-volume mobile phase strategies tailored to this pharmaceutical assay have not been developed or validated.

    Green chemistry integrated quality by design based RP-HPLC method for analysis of Itraconazole in pharmaceutical formulations · 2026 · DOI

  • The measurement uncertainty analysis identified peak area variability (0.8%) and standard mass weighing (0.5%) as significant contributors; the sources of this variability in the RP-HPLC system for Itraconazole quantification (instrumental drift, column batch variation, ambient temperature effects) need targeted investigation to reduce the expanded uncertainty below ±2.9%.

    Green chemistry integrated quality by design based RP-HPLC method for analysis of Itraconazole in pharmaceutical formulations · 2026 · DOI

  • While the sonication step contributes to the moderate energy demand in the RP-HPLC method for Itraconazole analysis, the specific energy consumption per sample (0.05 kWh) and its optimization potential through alternative sample preparation techniques (e.g., microwave-assisted or ultrasound-assisted extraction) have not been experimentally compared.

    Green chemistry integrated quality by design based RP-HPLC method for analysis of Itraconazole in pharmaceutical formulations · 2026 · DOI

  • The thermal and photolytic stability studies were conducted only at fixed conditions (80 °C for 72 h, 254 nm UV for 24 h); a time-course degradation kinetics study with varying temperature intervals and UV wavelengths for both bulk Itraconazole drug and gel formulations would clarify the stabilization mechanisms of excipients.

    Green chemistry integrated quality by design based RP-HPLC method for analysis of Itraconazole in pharmaceutical formulations · 2026 · DOI

  • The RP-HPLC method achieves AGREE and AGREEprep scores of only 0.71–0.72 due to reliance on toxic, non-renewable solvents (MeOH and ACN); specific alternative green solvents need to be systematically evaluated and validated for Itraconazole pharmaceutical formulation analysis to improve the greenness score above 0.75.

    Green chemistry integrated quality by design based RP-HPLC method for analysis of Itraconazole in pharmaceutical formulations · 2026 · DOI

  • The GAPI index indicates one red-colored step in the proposed method related to the area of no treatment of waste, suggesting waste management strategies need further development.

    Eco-friendly capillary gas chromatography with flame ionization detector (CGC-FID) to determine metronidazole benzoate in dosage forms · 2026 · DOI

  • Although classical stationary phases are the most commonly used column-packed materials in the analyses of these compounds by the RPLC method, the determination of the pKa value of miconazole and tioconazole with a cyano-based column has not been reported so far.

    A STUDY ON THE RETENTION BEHAVIOR OF SOME IMIDAZOLE ANTIMYCOTIC DRUGS IN ACETONITRILE-WATER BINARY MIXTURES · 2022 · DOI

  • Additional studies on triamcinolone acetonide use and misuse in sports: elimination profile after intranasal and high-dose intramuscular administrations.

    Revisited Pharmacokinetic Profiles of Methylprednisolone in Plasma and Urine After Single and Multiple Oral Administrations: Relevance in Sports Drug Testing · 2026 · DOI

  • Despite its advantages, the technique has certain analytical wavelengths (λmax) of the drugs to avoid baseline disturbances.

    METHOD DEVELOPMENT AND VALIDATION FOR ESTIMATION OF NIMESULIDE & DICLOFENAC IN PHARMACEUTICAL FORMULATIONS WITH THE HELP OF UV-VISIBLE SPECTROSCOPY: A REVIEW · 2026 · DOI

  • 1,2,4-Triazole derivatives, particularly those with a 2-bromo-5-methoxyphenyl radical, are promising due to their broad biological activities, yet their pharmacokinetic properties are insufficiently studied.

    ADME Profile Calculation and Drug Similarity Study of New 1,2,4-Triazole Derivatives Containing 2-Bromo-5-Methoxyphenyl Radical · 2025 · DOI

  • The process validation of pilot batch manufacturing with monitoring of the long-term stability until the end of shelf-life or equivalent to original claims needs to be studied.

    Development of Pharmaceutical Equivalent Montelukast Sodium Immediate-Release, Film-Coated Tablets · 2024 · DOI

  • The obtained results will fill in the lack of data on the fragmentation patterns of bisoprolol and related substances that could be used by researchers and practitioners in research and quality control laboratories.

    Forced degradation studies and structural characterization of related substances of bisoprolol fumarate in finished drug product using LC-UV-MS/MS · 2022 · DOI

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25 open questions have been extracted from the limitations and future-work passages of 676 Analytical Methods in Pharmaceuticals papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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