Enabling development, manufacturing, and regulatory approval of biotherapeutics through advances in mass spectrometry

I Apostol, PV Bondarenko, D Ren, DJ Semin… - Current Opinion in …, 2021 - Elsevier
Rapid technological advances have significantly improved the capability, versatility, and
robustness of mass spectrometers which has led to them playing a central role in the …

Rapid method development for chiral separation in drug discovery using sample pooling and supercritical fluid chromatography–mass spectrometry

Y Zhao, G Woo, S Thomas, D Semin… - Journal of Chromatography …, 2003 - Elsevier
A novel strategy for rapid chiral method development has been implemented using sample
pooling and supercritical fluid chromatography–mass spectrometry (SFC–MS) on four chiral …

Influence of vapor deposition parameters on SERS active Ag film morphology and optical properties

DJ Semin, KL Rowlen - Analytical Chemistry, 1994 - ACS Publications
The magnitude of surface enhancement from thin metal films is known to be critically
dependent on film morphol-ogy. In orderto establish the best methodology for generating …

Fluorescence photon antibunching from single molecules on a surface

WP Ambrose, PM Goodwin, J Enderlein, DJ Semin… - Chemical physics …, 1997 - Elsevier
Fluorescence correlation spectroscopy of individual Rhodamine 6G (R6G) molecules
immobilized on a silica surface is performed in air at room temperature using confocal laser …

Stability-indicating hydrophilic interaction liquid chromatography method for highly polar and basic compounds

M Liu, EX Chen, R Ji, D Semin - Journal of chromatography A, 2008 - Elsevier
A hydrophilic interaction liquid chromatography (HILIC) method was developed for the
analysis of very polar and basic 4-(aminomethyl)pyridine (4-AMP) and its related compounds. …

Short solution phase preparation of fused azepine-tetrazoles via a UDC (Ugi/de-Boc/cyclize) strategy

T Nixey, M Kelly, D Semin, C Hulme - Tetrahedron letters, 2002 - Elsevier
A novel application of the TMSN 3 modified Ugi 4-component reaction is disclosed for the
solution phase synthesis of fused azepine-tetrazole libraries. The reaction of a N-Boc-α-amino …

State-of-the-art and emerging trends in analytical approaches to pharmaceutical-product commercialization

…, MK Joubert, ST Kuhns, S Moore, DJ Semin… - Current Opinion in …, 2022 - Elsevier
… Author links open overlay panel Laura E Blue , Xiaoyan Guan , Marisa K Joubert , Scott T
Kuhns , Stephanie Moore , David J Semin , Mats Wikström , Jette Wypych , Chetan T Goudar …

Application of single molecule detection to DNA sequencing

…, SL Ishaug-Riley, NP Machara, DJ Semin… - Nucleosides and …, 1997 - Taylor & Francis
A flow cytometric, single molecule approach to DNA sequencing is described. A single,
fluorescently labeled DNA fragment is suspended in a flow stream. An exonuclease is added to …

Applicability of total reflection X-ray fluorescence (TXRF) as a screening platform for pharmaceutical inorganic impurity analysis

BJ Shaw, DJ Semin, ME Rider, MR Beebe - Journal of pharmaceutical and …, 2012 - Elsevier
Palladium (Pd) is extensively used in pharmaceutical small molecule drug substance
processes, however it must be removed prior to release of the active pharmaceutical ingredient (…

High‐throughput logP measurement using parallel liquid chromatography/ultraviolet/mass spectrometry and sample‐pooling

…, J Jona, DT Chow, H Rong, D Semin… - … in mass spectrometry, 2002 - Wiley Online Library
A novel approach to high‐throughput logP measurement based on liquid chromatography/ultraviolet/mass
spectrometry (LC/UV/MS) is proposed. The logP value is determined by …