Thomas O’Connor

ORCID: 0000-0003-1037-0083
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About
Contact & Profiles
Research Areas
  • Crystallization and Solubility Studies
  • Innovative Microfluidic and Catalytic Techniques Innovation
  • Granular flow and fluidized beds
  • Drug Solubulity and Delivery Systems
  • Advanced Statistical Process Monitoring
  • Protein purification and stability
  • Mineral Processing and Grinding
  • Spectroscopy and Chemometric Analyses
  • Process Optimization and Integration
  • Fluid Dynamics and Mixing
  • Fault Detection and Control Systems
  • Analytical Chemistry and Chromatography
  • Injection Molding Process and Properties
  • Powder Metallurgy Techniques and Materials
  • Spectroscopy Techniques in Biomedical and Chemical Research
  • Viral Infectious Diseases and Gene Expression in Insects
  • American Constitutional Law and Politics
  • Microfluidic and Capillary Electrophoresis Applications
  • Chemistry and Chemical Engineering
  • Hemoglobinopathies and Related Disorders
  • Catholicism and Religious Studies
  • Tuberculosis Research and Epidemiology
  • Big Data and Business Intelligence
  • Additive Manufacturing and 3D Printing Technologies
  • Electrohydrodynamics and Fluid Dynamics

Center for Drug Evaluation and Research
2016-2025

Quality Research
2021-2025

United States Food and Drug Administration
2015-2025

Princeton University
2004-2006

Georgetown University Medical Center
1960

Georgetown University
1960

The pharmaceutical industry faces multiple challenges (e.g., inefficient manufacturing techniques, quality control issues, and supply chain vulnerabilities) because of its current batch-wise approach to manufacturing. Recent regulatory support for continuous advances in process technologies have caused an increase interest from some drug manufacturers modernize their production processes. However, many these companies focused on hybrid processes, where only certain steps are continuous,...

10.1021/acs.oprd.0c00383 article EN Organic Process Research & Development 2020-10-21

Continuous manufacturing (CM) is an emerging technology in the pharmaceutical sector, and understanding of impact on product quality currently evolving. As final purification isolation step, crystallization has a significant physicochemical properties drug substance considered critical process step achieving continuous substances. Although many publications previously focused various innovative techniques to continuously make crystals with desired properties, engineering difficulties such as...

10.1021/acs.oprd.7b00130 article EN publisher-specific-oa Organic Process Research & Development 2017-06-15

Encrustation is a risk factor that can cause product and process failure in continuous crystallization processes. Mitigation, prevention, control of encrustation have been extensively researched. Various mitigation strategies proposed the literature, such as coating crystallizer walls, use additives to kinetics, periodic steady-state operation show promising results delaying or preventing encrustation. Because increased interest industrial applications, it important understand this further....

10.1021/acs.oprd.9b00072 article EN Organic Process Research & Development 2019-05-08

Crystallization has a significant impact on the properties of active pharmaceutical ingredient (API) since it is final step in manufacturing drug substance and determines particle size distribution, purity, shape, polymorphs. Many publications have focused implementation Process Analytical Technology (PAT) tools for monitoring batch continuous operation; however, comprehensive method development validation Raman spectroscopy to monitor crystallization not been presented. This work...

10.1021/acs.oprd.7b00322 article EN Organic Process Research & Development 2017-12-29

We report here a fully automated, end-to-end, integrated continuous manufacturing process for small-molecule generic medication with built-in quality assurance. The entire fits into box of 30.7 m2 modular footprint and total residence time less than 30 h, throughput up to 40.3 × 106 tablets per year.

10.1039/c9cc06945c article EN Chemical Communications 2019-12-09

Using process modeling to understand dynamics and potentially explore the design space of a crystallization is difficult because its complex nature with many factors at play, such as initial concentration, supersaturation, seeding strategy, flow pattern. In this work, systematic approach applied sequentially estimate growth nucleation rate cooling carbamazepine various conditions in batch operation. Different formulations kinetic expressions are tested model discrimination exercise obtain...

10.1021/acs.cgd.0c00434 article EN Crystal Growth & Design 2020-06-23

Pharmaceutical crystallization affects the properties of APIs as it determines purity and crystal size distribution, among other attributes. This work presents two CLD–CSD models, theoretical empirical, for a model compound.

10.1039/d0ce01388a article EN CrystEngComm 2020-12-10

Abstract The COVID-19 pandemic has led to increased usage of hand sanitizer products by the public prevent spread and decrease likelihood acquiring disease. increase in demand also an number manufacturers. This work describes FDA’s Center for Drug Evaluation Research (CDER) laboratories efforts develop tests assess quality containing ethanol or isopropanol as primary active ingredient. were evaluated ingredient content determination 12 impurities listed FDA Hand Sanitizer Temporary Guidance,...

10.1186/s41120-021-00049-8 article EN cc-by AAPS Open 2022-01-17
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