Follow us on
Search News Archives
Conferences | Events
Monthly Newsletter
Lab Bulletin Media Partners

Linkam Reports on how Astra Zeneca Study the Effects of Changes in Humidity on the Development of new APIs

publication date: May 16, 2018
 | 
author/source: Linkam Scientific Instruments Limited

Linkam's RH95 humidity systemMarket leaders in temperature-controlled microscopy, Linkam Scientific Instruments, report on how Astra Zeneca monitor changes in humidity and their effects on the development of new APIs.

The work is being led by Dr James McCabe, Associate Principal Scientist based at the Macclesfield laboratories of Astra Zeneca.

Dr James McCabe is an Associate Principal Scientist in the Early Product Development Group (EPD) of Astra Zeneca based in Macclesfield in the UK. His research aim is to find the optimal solid form of an active pharmaceutical ingredient (API) for drug development and understand the risks and opportunities associated with that solid form. This includes understanding and mitigating risks associated with hydrate formation as at least 25% of drug molecules can form hydrates. Pharmaceutical compounds can also be exposed to aqueous environments or moisture during certain processing conditions such as wet granulation during tableting. This means the understanding of critical relative humidities for hydrate formation is of paramount importance. To this end, Dr McCabe is always looking for optimum instrumentation to provide the maximum amount of data.

Dr McCabe talks about his experience in using humidity controllers and how he settled on the use of the RH95 system from Linkam. “I have used many humidity systems including dynamic vapour sorption (DVS) from various vendors as well as using them when making environmental X-ray powder diffraction measurements. The advantage of the Linkam RH95 humidity system used in conjunction with one of their temperature stages (THMS600) is that visual changes in crystal/particle morphology (size, shape etc.) can be observed in real time. The stage provides the added ability of then dehydrating samples via elevated temperature as part of the same experiment. This capability is also available on DVS systems, but the images are then macro as opposed to micro. An additional advantage is that in principle a single crystal of material could be assessed using the Linkam humidity system, a sample amount too small for other techniques.”

Dr McCabe's work with optical temperature stages has included the use of a new technique called TASC – Thermal Analysis by Structural Characterisation. TASC provides spatially resolved information on thermal transitions to images/movies acquired by temperature stage microscopy. It highlights any structural changes in the sample providing excellent complementary information with traditional forms of differential and modulated differential scanning calorimetry, DSC & MDSC, both being macro techniques.

Dr McCabe is optimistic for future exploitation of TASC in the pharmaceutical industry. “TASC appears to be a powerful thermo-optical technique for measuring optical changes within a sample. Glass transition and melting temperatures can quickly be measured, and complex mixed-phase systems can be assessed. I will carry out further work to apply this technique to other areas such as crystal growth (induction times), dissolution and physical stability of amorphous materials when exposed to the combination of both temperature and humidity change.”


more news from linkam



If you have not logged into the website then please enter your details below.



 

Popular this month


Top Trends Changing The Medical Laboratory Industry In Europe
MtoZ Biolabs Releases Protein N-terminal Sequencing Technique
Discovery Park Unveils New Management Team

Control and monitor up to 50 cyclers from a central software application


Quantifying SF6 and PCBs with a custom-designed Nexis GC-2030


Differential Ion Mobility Interface Boosts Proteomics Workflow Performance


New Catalogue from Scientific Laboratory Supplies Ltd


Waters’ Empower software integrates Metrohm ion chromatography systems
Peak Scientific Underlines its Position as the Leader in Nitrogen Systems for Single Quad LC-MS
Chromatography Training from Hichrom

Can't find what you are looking for?


Search by company or by product


Company Name:

Product:





Please note Lab Bulletin does not sell, supply any of the products featured on this website. If you have an enquiry, please use the contact form below the article or company profile and we will send your request to the supplier so that they can contact you directly.

Lab Bulletin is published by newleaf marketing communications ltd