A Hybrid MPC-PID Control System Design for the Continuous Purification and Processing of Active Pharmaceutical Ingredients

09 Jun 2023 | Contributor(s): Sen, M, Singh, R, Ramachandran, R

In this work, a hybrid MPC (model predictive control)-PID (proportional-integral-derivative) control system has been designed for the continuous purification and processing framework of active pharmaceutical ingredients (APIs). The specific unit operations associated with the purification and...

A New Software Framework for Implementing Crystal Growth Models to Materials of Any Crystallographic Complexity

09 Jun 2023 | Contributor(s): Zhao, Yongsheng, Tilbury, Carl J. Landis, Steven Sun, Yuanyuan, Li, Jinjin, Zhu, Peng, Doherty, Michael F.

To continue the realization of new therapeutics, a more diverse range of solid forms is being considered. Synthetic modalities are broadening beyond simple organic molecules to more complicated structures, including organic salts, cocrystals, and solvates. As in all crystalline applications,...

A Novel Integrated Workflow for Isolation Solvent Selection Using Prediction and Modeling

09 Jun 2023 | Contributor(s): Ottoboni, S, Wareham, BVassileiou, A, Robertson, M, Brown, CJ, Johnston, B, Price, CJ

A predictive tool was developed to aid process design and to rationally select optimal solvents for isolation of active pharmaceutical ingredients. The objective was to minimize the experimental work required to design a purification process by (i) starting from a rationally selected...

A novel robust digital design of a network of industrial continuous cooling crystallizers of dextrose monohydrate: From laboratory experiments to industrial application

09 Jun 2023 | Contributor(s): Nagy, Zoltan K., Szilagyi, Botond Pal, Kanjakha, Tabar, Iman Beheshti ;

This paper presents the first-ever industrial application of the digital design of a complex, large-scale industrial continuous crystallization network. The aim of the work is to optimize a large-scale continuous crystallization network used for the purification of dextrose monohydrate, by...

A Process for the Formation of Nanocrystals of Active Pharmaceutical Ingredients with Poor Aqueous Solubility in a Nanoporous Substrate

09 Jun 2023 | Contributor(s): O'Mahony, M, Leung, AKFerguson, S, Trout, BL, Myerson, AS

A potential process for the formation of nanocrystals of the poorly soluble drug, ibuprofen, within a nanoporous material is demonstrated. Nanocrystalline ibuprofen (IBP) is prepared at <= 106 nm by adding a solution containing IBP to particles of controlled pore glass (CPG) within a column so...

A Stochastic Population Balance Equation Model for Nucleation and Growth of Crystals with Multiple Polymorphs

09 Jun 2023 | Contributor(s): Maggioni, Giovanni, Mazzotti, Marco

Understanding polymorph crystallization is important due to the different properties, such as bioavailability or crystal shape, exhibited by the different crystal forms. In this work, we present a model, based on population balance equations, describing the unseeded crystallization by cooling of...

A Structured Approach To Cope with Impurities during Industrial Crystallization Development

09 Jun 2023 | Contributor(s): Urwin, SJ, Levilain, GMarziano, I, Merritt, JM, Houson, I, Ter;Horst, JH

The perfect separation with optimal productivity, yield, and purity is very difficult to achieve. Despite its high selectivity, in crystallization unwanted impurities routinely contaminate a crystallization product. Awareness of the mechanism by which the impurity incorporates is key to...

A Virtual Plant for Integrated Continuous Manufacturing of a Carfilzomib Drug Substance Intermediate, Part 3: Manganese-Catalyzed Asymmetric Epoxidation, Crystallization, and Filtration

25 Jun 2024 | Contributor(s): Maloney, Andrew J., Içten, Elçin, Capellades, Gerard, Beaver, Matthew G., Zhu, Xiaoxiang, Graham, Lauren R., Brown, Derek B., Griffin, Daniel J., Sangodkar, Rahul, Allian, Ayman, Huggins, Seth, Hart, Roger, Rolandi, Pablo, Walker, Shawn D., Braatz, Richard D.

This article describes the process characterization and development of models to inform a process control strategy to prepare (R,R)-epoxy ketone 2, an intermediate in the manufacture of carfilzomib. Model calibration for relevant unit operations and the development of a dynamic integrated...

Achieving Continuous Manufacturing: Technologies and Approaches for Synthesis, Workup, and Isolation of Drug Substance May 20-21, 2014 Continuous Manufacturing Symposium

09 Jun 2023 | Contributor(s): Baxendale, IR, Braatz, RDHodnett, BK, Jensen, KF, Johnson, MD, Sharratt, P, Sherlock, JP, Florence, AJ

This whitepaper highlights current challenges and opportunities associated with continuous synthesis, workup, and crystallization of active pharmaceutical ingredients (drug substances). We describe the technologies and requirements at each stage and emphasize the different considerations for...

Analytical Design and Operation of Systems with Crystallization, Filtration, and Recycling

09 Jun 2023 | Contributor(s): Ward, Jeffrey D, Yu, Cheng-ching, Doherty, Michael F

In this article, we introduce an analogous dimensionless model for a continuous rotary drum filter and show that a similar methodology can be used to predict the behavior of a combined crystallizer and filter, and a reactor, crystallizer, filter, and recycle circuit. We show the effect of the...

Application of Model-Free and Model-Based Quality-by-Control (QbC) for the Efficient Design of Pharmaceutical Crystallization Processes

09 Jun 2023 | Contributor(s): Szilagyi, Botond, Eren, Ayse Quon, Justin L. Papageorgiou, Charles D., Nagy, Zoltan K.

The design of pharmaceutical crystallization processes is a challenging engineering problem because of the specific and versatile quality requirements of the end-product, amplified by the tight regulatory standards. The current industrial standard for crystallization process design is based on...

Application of process analytical technology-based feedback control for the crystallization of pharmaceuticals in porous media

09 Jun 2023 | Contributor(s): Acevedo, David A., Ling, Jing Chadwick, Keith, Nagy, Zoltak K. ;

The purpose of this work is to implement a feedback control approach during the cooling crystallization of paracetamol (PCM) in porous media to increase the amount of PCM in the alginate beads (i.e., drug loading) and minimize the heterogeneous nucleation occurring in the bulk system. Two types...

Application of Ultra-Performance Liquid Chromatography as an Online Process Analytical Technology Tool in Pharmaceutical Crystallization

09 Jun 2023 | Contributor(s): Yang, Yang, Zhang, Chuntao Pal, Kanjakha Koswara, Andy, Quon, Justin, Mckeown, Rahn, Goss, Charles, Nagy, Zoltan K

Concentration is often an important process parameter in pharmaceutical crystallization processes. In this work, an ultra-performance liquid chromatography (UPLC) system designed for process monitoring (Waters PATROL UPLC) was applied online as a process analytical technology tool for real-time...

Axial Chirality in the Sotorasib Drug Substance, Part 2: Leveraging a High-Temperature Thermal Racemization to Recycle the Classical Resolution Waste Stream

25 Jun 2024 | Contributor(s): Beaver, Matthew G., Brown, Derek B., Campbell, Kiersten, Fang, Yuan-Qing, Ford, David D., Mardirossian, Narbe, Nagy, Kevin D., Rötheli, Andreas R., Sheeran, Jillian W., Telmesani, Reem, Parsons, Andrew T.

The development and kilogram-scale demonstration of a high-temperature continuous-flow racemization process to recycle the off-enantiomer of an atropisomeric sotorasib intermediate is described. Part 1 of this two-part series details the design and execution of a classical resolution to generate...

Comparative investigation of supersaturation and automated direct nucleation control of crystal size distributions using ATR-UV/vis spectroscopy and FBRM

09 Jun 2023 | Contributor(s): Saleemi, Ali N., Rielly, Chris D., Nagy, Zoltan K.

The paper presents a thorough evaluation of different control strategies used in cooling crystallization, namely, unseeded linear cooling, seeded linear cooling, supersaturation control, and automated direct nucleation control. The sensitivity and robustness of supersaturation and automated...

Composite Hydrogels Laden with Crystalline Active Pharmaceutical Ingredients of Controlled Size and Loading

09 Jun 2023 | Contributor(s): Eral, HB, O'Mahony, MShaw, R, Trout, BL, Myerson, AS, Doyle, PS

Efficient control of crystallization and crystal properties still represents a bottleneck in the manufacturing of crystalline materials ranging from pigments to semiconductor particles. In the case of pharmaceutical drug manufacture, current methods for controlling critical crystal properties...

Comprehensive modelling of pharmaceutical solvation energy in different solvents

09 Jun 2023 | Contributor(s): Panwar, A, Shirazian, SSingh, M, Walker, GM

Crystallization is an important processing step in production of active pharmaceutical ingredients (API). This process is used to recover/separate the synthesized APIs for further processing to final solid dosage oral formulations. Control and understanding of crystallization are of great...

Continuous and Scalable Process for the Production of Hollow Crystals of a Poorly Water-Soluble Active Pharmaceutical Ingredient for Dissolution Enhancement and Inhaled Delivery

09 Jun 2023 | Contributor(s): Sheng, F, Chow, PSDong, YC, Heng, D, Lee, SH, Tan, RBH

This study reports a new technique for the manufacture of micron-sized, hollow crystals of a poorly water-soluble pharmaceutical compound, spironolactone, by a continuous and scalable antisolvent precipitation platform called a static mixer. Additives (polyvinylpyrrolidone (PVP) and Tween 80)...

Continuous Crystallization of Aliskiren Hemifumarate

09 Jun 2023 | Contributor(s): Quon, JL, Zhang, HAlvarez, A, Evans, J, Myerson, AS, Trout, BL

Active ingredients in most pharmaceutical products are complex organic molecules that require crystallization as a purification and isolation step that results in a pure product at a high process yield. Knowledge of the operating conditions required to obtain crystals with the desired crystal...

Continuous Crystallization of Paracetamol (Acetaminophen) Form II: Selective Access to a Metastable Solid Form

09 Jun 2023 | Contributor(s): Agnew, LR, McGlone, TWheatcroft, HP, Robertson, A, Parsons, AR, Wilson, CC

The first continuous crystallization of a metastable polymorphic form of an active pharmaceutical ingredient is reported. Paracetamol form II, which displays enhanced solubility and compressibility in comparison to the stable form I, has been successfully crystallized in two continuous platforms:...

Continuous crystallization of pharmaceuticals using a continuous oscillatory baffled crystallizer

09 Jun 2023 | Contributor(s): Lawton, Simon, Steele, Gerry Shering, Phil Zhao, Lihua, Laird, Ian, Ni,, Xiong Wei

In this paper, we report an investigation into the continuous crystallization of a model active pharmaceutical ingredient (API) using a continuous oscillatory baffled crystallizer (COBC). The results show that continuous crystallization offers significant advantages in terms of process, operation...

Continuous Heterogeneous Crystallization on Excipient Surfaces

09 Jun 2023 | Contributor(s): Yazdanpanah, Nimaa, Testa, Christopher J., Perala, Siva R. K., Jensen, Keith D., Braatz, Richard D., Myerson, Allan S., Trout, Bernhardt L.

A novel continuous heterogeneous crystallization process is, developed in which the active pharmaceutical ingredient (API) is crystallized directly on the surface of an excipient within the crystallizer. The produet is subsequently dried and formed into tablets without the need for complex...

Control of process operations and monitoring of product qualities through generic model-based in batch cooling crystallization

09 Jun 2023 | Contributor(s): Samad, Noor Asma Fazli Abdul, Singh, Ravendra Sin, Gürkan Gernaey, Krist V, Gani, Rafiqul

A generic model-based framework has been developed for crystallization processes, with applications aiming at the control of process operations and the monitoring of product quality. This generic model-based framework allows the systematic development of a wide range of crystallization models for...

Core-Shell Composite Hydrogels for Controlled Nanocrystal Formation and Release of Hydrophobic Active Pharmaceutical Ingredients

09 Jun 2023 | Contributor(s): Badruddoza, AM, Godfrin, PDMyerson, AS, Trout, BL, Doyle, PS

Although roughly 40% of pharmaceuticals being developed are poorly water soluble, this class of drugs lacks a formulation strategy capable of producing high loads, fast dissolution kinetics, and low energy input. In this work, a novel bottom-up approach is developed for producing and formulating...

Crystal Population Balance Formulation and Solution Methods: A Review

09 Jun 2023 | Contributor(s): Omar, Hecham M., Rohani, Sohrab

Crystallization is an important part of many chemical industries. Efforts are being invested to improve the performance of the crystallization process by designing novel crystallizers. An important aspect in the development of new crystallizers is the ability to describe the behavior of such...