Understanding Powder Behavior in Continuous Feeding: Powder Densification and Screw Layering

16 Oct 2024 | Peer-reviewed journal | Contributor(s): Sara Fathollahi, Pauline H. M. Janssen, Bram Bekaert, Dirk Vanderroost, Valerie Vanhoorne, Bastiaan H. J. Dickhoff

Background: Precise continuous feeding of active pharmaceutical ingredients (APIs) and excipients is crucial in a continuous powder-to-tablet manufacturing setup, as any inconsistency can affect the final tablet quality. Method: This study investigated the impact of various materials on the...

Continuous Processing. Continuous Evolution

08 Oct 2024 | Magazine | Contributor(s): Douglas Hausner

Continuous processing for small molecule products has been a hot topic for years, but where does the industry stand with it today? We speak with Doug Hausner, Senior Manager, Continuous Manufacturing, Oral Solid Dose, Pharma Services at Thermo Fisher Scientific, to find out.

Continuous micro feeding and mixing of solid dosage forms under vibrational excitation

08 Oct 2024 | Peer-reviewed journal | Contributor(s): Haifeng Lu, Liang Zhang, Hui Du, Xiaolei Guo, Haifeng Liu

Continuous manufacturing has intrigued many researchers in the pharmaceutical industry in the post-COVID-19 world. We experimentally studied the discharge characteristics of pharmaceutical excipients under vibrational excitation. The successful accurate dosing and filling of powders at fill...

Pharmaceutical Continuous Manufacturing: Content Uniformity With PAT And RTR

16 Sep 2024 | Website | Contributor(s): Richard Steiner

In pharmaceutical continuous manufacturing (PCM), technical solutions ensuring critical quality attributes for content uniformity and unit dose exist for online, in-line, and at-line measurements. Process analytical technology (PAT) allows in-line measurement and control of critical process...

A modeling and control framework for extraction processes

05 Sep 2024 | Peer-reviewed journal | Contributor(s): Peter Neugebauer, Jakob Rehrl, Peter Poechlauer, Dirk Kirschneck, Martin Horn, Martin Steinberger, Stephan Sacher, Joscha Boehm, Daniel Moser

Many continuously operated pharmaceutical process routes have been presented recently. Most of these cover the synthesis of the active pharmaceutical ingredient (API) or solid dosage processing. However, the API purification is also gaining attraction. One widespread and waste-intensive unit...

Critical review on the role of excipient properties in pharmaceutical powder-to-tablet continuous manufacturing

13 Aug 2024 | Peer-reviewed journal | Contributor(s): Sara Fathollahi, Pauline H. M. Janssen, Bastiaan H. J. Dickhoff, Henderik W. Frijlink

The pharmaceutical industry is gradually changing batch-wise manufacturing processes to continuous manufacturing processes, due to the advantages it has to offer. The final product quality and process efficiency of continuous manufacturing processes is among others impacted by the properties of...

The Use of a Closed Feed Frame for the Development of Near-Infrared Spectroscopic Calibration Model to Determine Drug Concentration

23 Jul 2024 | Peer-reviewed journal | Contributor(s): Movilla-Meza, Nathaly A., Sierra-Vega, Nobel O., Alvarado-Hernández, Bárbara B., Méndez, Rafael, Romañach, Rodolfo J.

Purpose: This study evaluates the use of the closed feed frame as a material sparing approach to develop near-infrared (NIR) spectroscopic calibration models for monitoring blend uniformity. The effect of shear induced by recirculation on NIR spectra was also studied. Methods: Calibration models...

Formulation development of a continuously manufactured orodispersible film containing warfarin sodium for individualized dosing

23 Jul 2024 | Peer-reviewed journal | Contributor(s): Niese, Svenja, Quodbach, Julian

Continuously manufactured orodispersible films (ODFs) offer a promising approach for individualized therapy with an easy to administer solid dosage form. The aim of this study was to develop a long ODF containing warfarin sodium to enable safe and more flexible dosing. Formulation development was...

Delta-mannitol to enable continuous twin-screw granulation of a highly dosed, poorly compactable formulation

23 Jul 2024 | Peer-reviewed journal | Contributor(s): Vanhoorne, V., Almey, R., De Beer, T., Vervaet, C.

In current study, it was investigated if the moisture-mediated polymorphic transition from δ- to β-mannitol during twin screw granulation (TSG) also took place in high drug loaded formulations and if the specific granule morphology associated with the polymorphic transition could enable tableting...

Managing active pharmaceutical ingredient raw material variability during twin-screw blend feeding

23 Jul 2024 | Peer-reviewed journal | Contributor(s): Stauffer, F., Vanhoorne, V., Pilcer, G., Chavez, Pierre-François, Schubert, M. A., Vervaet, C., De Beer, T.

Continuous powder feeding is a critical step in continuous manufacturing of solid dosage forms, as this unit operation should ensure the mass flow consistency at the desired powder feed rate to guarantee the process throughput and final product consistency. In this study, twin-screw feeding of a...

Cleaning of direct compression continuous manufacturing equipment through displacement of API residues by excipients

23 Jul 2024 | Peer-reviewed journal | Contributor(s): Patel, Dhavalkumar S, Méndez, Rafael, Romañach, Rodolfo J

This feasibility study evaluates a cleaning process designed to avoid the use of detergents and reduce operator exposure to the active pharmaceutical ingredient (API). The continuous manufacturing equipment was cleaned using excipients to displace ibuprofen residues from the system. The cleaning...

Cleaning of direct compression continuous manufacturing equipment through displacement of API residues by excipients

23 Jul 2024 | Peer-reviewed journal | Contributor(s): Patel, Dhavalkumar S, Méndez, Rafael, Romañach, Rodolfo J

This feasibility study evaluates a cleaning process designed to avoid the use of detergents and reduce operator exposure to the active pharmaceutical ingredient (API). The continuous manufacturing equipment was cleaned using excipients to displace ibuprofen residues from the system. The cleaning...

Blend uniformity monitoring in a continuous manufacturing mixing process for a low-dosage formulation using a stream sampler and near infrared spectroscopy

19 Jul 2024 | Peer-reviewed journal | Contributor(s): Rodolfo Romanach, Raúl S. Rangel-Gil, Juan M. Nasrala-Álvarez, Rafael Méndez

Continuous manufacturing has the potential to offer several benefits for the production of oral solid dosage forms, including reduced costs, low-scale equipment, and the application of process analytical technology (PAT) for real-time process control. This study focuses on the implementation of...

Blend uniformity monitoring in a continuous manufacturing mixing process for a low-dosage formulation using a stream sampler and near infrared spectroscopy

19 Jul 2024 | Peer-reviewed journal | Contributor(s): Rodolfo Romanach, Raúl S. Rangel-Gil, Juan M. Nasrala-Álvarez, Rafael Méndez

Continuous manufacturing has the potential to offer several benefits for the production of oral solid dosage forms, including reduced costs, low-scale equipment, and the application of process analytical technology (PAT) for real-time process control. This study focuses on the implementation of...

Inverse Method-Based Kinetic Modelling and Process Optimization of Reverse-Phase Chromatography for Molnupiravir Synthesis

18 Jul 2024 | Peer-reviewed journal | Contributor(s): Fernando Muzzio, George Tsilomelekis, Ravendra Singh, Athanasios Kritikos

Our research addresses the shift towards continuous manufacturing in the pharmaceutical industry, focusing on optimizing chromatographic separation for the synthesis of molnupiravir. Using an inverse method with six different inlet concentrations for a single objective function, we...

Control oriented modeling of twin-screw granulation in the ConsiGmaTM-25 production plant

09 Jul 2024 | Peer-reviewed journal | Contributor(s): Johannes Khinast, Martin Horn, Jakob Rehrl, Selma Celikovic, Johannes Poms

ConsiGmaTM-25 is a continuous production plant integrating a twin-screw granulation, fluid bed drying, granule conditioning, and a tableting unit. The particle size distribution (PSD), active pharmaceutical ingredient (API) content, and liquid content of wet granules after twin-screw...

Control oriented modeling of twin-screw granulation in the ConsiGmaTM-25 production plant

09 Jul 2024 | Peer-reviewed journal | Contributor(s): Johannes Khinast, Martin Horn, Jakob Rehrl, Selma Celikovic, Johannes Poms

ConsiGmaTM-25 is a continuous production plant integrating a twin-screw granulation, fluid bed drying, granule conditioning, and a tableting unit. The particle size distribution (PSD), active pharmaceutical ingredient (API) content, and liquid content of wet granules after twin-screw...

Implementation of a fully integrated continuous manufacturing line for direct compression and coating at a commercial pharmaceutical facility – Part 1: Operational considerations and control strategy

25 Jun 2024 | Peer-reviewed journal | Contributor(s): Conway, Stephen L., Rosas, Juan G., Overton, Paul, Tugby, Neil, Cryan, Phillip, Witulski, Frank, Hurley, Samantha, Wareham, Laura, Tantuccio, Anthony, Ramasamy, Manoharan, Lalloo, Anita, Gibbs, Mason, Meyer, Robert F.

We implement a fully integrated continuous manufacturing (CM) line for direct compression and coating of a pharmaceutical oral solid dosage form in a commercial production facility. In this first paper of a two-part series, we describe process design and operational choices made to introduce CM...

Implementation of a fully integrated CM direct compression and coating process at a commercial pharmaceutical facility - Part 2: PAT and RTD results for normal operational conditions batches.

25 Jun 2024 | Peer-reviewed journal | Contributor(s): Rosas, JG, Brush, P, Thompson, B, Miller, C, Overton, P, Tugby, N, Stoliarskaia, D, Hurley, S, Ramasamy, M, Conway, SL

This is the second of two articles detailing the continuous manufacturing (CM) development and implementation activities for an marketed product which have been realized in novel, qualified equipment, using validated control strategy elements to enable manufacture of batches under current good...

Flash Chemistry Approach to Organometallic C-Glycosylation for the Synthesis of Remdesivir

25 Jun 2024 | Peer-reviewed journal | Contributor(s): Keutz, Timo von, Williams, Jason D., Kappe, C. Oliver

In a rapidly changing environment, such as the current COVID-19 pandemic, continuous flow reactors bear the potential to increase the production of urgently needed active pharmaceutical ingredients (APIs) on demand. In the synthesis of remdesivir, the organometallic C-glycosylation step was...

Synthesis of the Brivaracetam Employing Asymmetric Photocatalysis and Continuous Flow Conditions

25 Jun 2024 | Peer-reviewed journal | Contributor(s): Franco, Marcelo S., Silva, Rodrigo C., Rosa, Gabriel H. S., Flores, Lara M., Oliveira, Kleber T. de, Assis, Francisco F. de

An original total synthesis of the antiepileptic drug brivaracetam (BRV) is reported. The key step in the synthesis consists of an enantioselective photochemical Giese addition, promoted by visible-light and the chiral bifunctional photocatalyst Δ-RhS. Continuous flow conditions were employed to...

A Virtual Plant for Integrated Continuous Manufacturing of a Carfilzomib Drug Substance Intermediate, Part 2: Enone Synthesis via a Barbier-Type Grignard Process

25 Jun 2024 | Peer-reviewed journal | Contributor(s): Içten, Elçin, Maloney, Andrew J., Beaver, Matthew G., Zhu, Xiaoxiang, Shen, Dongying E., Robinson, Jo Anna, Parsons, Andrew T., Allian, Ayman, Huggins, Seth, Hart, Roger, Rolandi, Pablo, Walker, Shawn D., Braatz, Richard D.

This article details efforts to characterize and develop a process control strategy for the manufacture of enone 2, a carfilzomib drug substance intermediate obtained through a Barbier-type Grignard reaction of morpholine amide 1. This includes the development of a novel mechanistic model for the...

Development of a Continuous Flow Process for a Matteson Reaction: From Lab Scale to Full-Scale Production of a Pharmaceutical Intermediate

25 Jun 2024 | Peer-reviewed journal | Contributor(s): Stueckler, Clemens, Hermsen, Peter, Ritzen, Bas, Vasiloiu, Maria, Poechlauer, Peter, Steinhofer, Stefan, Pelz, Andreas, Zinganell, Christopher, Felfer, Ulfried, Boyer, Serge, Goldbach, Michel, de Vries, André, Pabst, Thomas, Winkler, Georg, LaVopa, Vito, Hecker, Scott, Schuster, Christian

Within this paper, we present the design, development, and scale-up of a process for a continuous Matteson reaction to produce a key intermediate toward the β-lactamase inhibitor vaborbactam. This includes the successful implementation of the continuous concept at a multiton production scale for...

A Continuous Flow Sulfuryl Chloride-Based Reaction—Synthesis of a Key Intermediate in a New Route toward Emtricitabine and Lamivudine

25 Jun 2024 | Peer-reviewed journal | Contributor(s): Souza, Juliana M. de, Berton, Mateo, Snead, David R., McQuade, D. Tyler

We demonstrate a continuous two-step sequence in which sulfenyl chloride is formed, trapped by vinyl acetate, and chlorinated further via a Pummerer rearrangement. These reactions produce a key intermediate in our new approach to the oxathiolane core used to prepare the antiretroviral medicines...

Development of a Green and Sustainable Manufacturing Process for Gefapixant Citrate (MK-7264) Part 4: Formylation–Cyclization as a Flow–Batch Process Leads to Significant Improvements in Process Mass Intensity (PMI) and CO Generated versus the Batch–

25 Jun 2024 | Peer-reviewed journal | Contributor(s): Otte, Douglas A. L., Basu, Kallol, Jellett, Lisa, Whittington, Michael, Spencer, Glenn, Burris, Matthew, Corcoran, Emily B., Stone, Kevin, Nappi, Jarod, Arvary, Rebecca A., Donoghue, David, Ren, Hong, Maloney, Kevin M., Naber, John R.

Gefapixant citrate (MK-7264) is a P2X3 antagonist for the treatment of chronic cough. The second generation manufacturing route developed for the Step 3A/3B formylation–cyclization reaction to generate the key intermediate diaminopyrimidine (1) (AF-072) required a significant excess of ethyl...