PureHoney Technologies
  • Billerica, MA, United States
Recent publications
Label-free in vitro potency assays are an emerging field in drug discovery to enable more physiological conditions, to improve the readout quality, and to save time. For this approach mass spectrometry (MS) is a powerful technology to directly follow physiological processes. The speed of this methodology, however, was for a long time not compatible with chemiluminescence- or fluorescence-based assays. Recent advances in matrix-assisted laser desorption/ionization (MALDI) instrumentation paved the way for high-throughput MS analysis of label-free assays for large compound libraries, whereas electrospray ionization (ESI)-based mass spectrometers equipped with RapidFire autosamplers were limited to medium throughput. Here we present a technological advancement of the RapidFire device to enable cycle times of 2.5 s per sample. This newly developed BLAZE-mode substantially boosted the ESI-MS analysis speed, providing an alternative technology for label-free high-throughput screening.
Aim We describe the validation of an HPLC–MS/MS method to analyze ceftolozane and tazobactam simultaneously in saline matrixes. Materials & methods An Agilent 1260 HPLC interfaced to an Agilent 6470 triple-quadrupole mass spectrometer was used for quantification. A reverse-phase column running a gradient of water and acetonitrile containing 0.1% formic acid mobile phase at a flow rate of 1.0 ml/min provided chromatographic fractionation. Tazobactam¹⁵N3 was used as the internal standard. The standard curves were linear over a range of 0.02–0.5 μg/ml. Conclusion This methodology represents a simple, reproducible approach to the determination of drug concentrations with accuracy and precision for pharmacokinetic studies undertaken with this recently US FDA-approved antimicrobial therapy.
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44 Manning Road, Suite 101, 01821, Billerica, MA, United States
Head of institution
Can "Jon" Ozbal, PhD
+1 978 461-4760