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Application Note

iASAP Analysis of Air-Sensitive Compounds via Inert Sampling Techniques

Many chemical reactions carried out by synthetic chemists involve air-sensitive compounds such as metal catalysts and organometallics and must therefore be carried out in a glove box or using a Schlenk line to prevent oxidation and hydrolysis. Sampling and transportation of these samples to a mass spectrometer by an Atmospheric Solids Analysis Probe (ASAP ®)…

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Application Note

Complete Reaction-Monitoring Solution

Reaction monitoring is a key aspect in a range of chemistry environments from chemical synthesis to drug discovery to understanding natural products and protein synthesis. To understand the optimal time to quench a reaction for maximum yield as well as to monitor a reaction real-time is vital to many medicinal and synthetic organic chemists. The…

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Application Note

Flow Chemistry Monitoring & Optimization Using Compact Mass Spectrometry

This note covers work carried out at Leeds University with co-workers from Durham University in the area of flow chemical synthesis using the expression CMS (Advion, Ithaca, NY). Two different reactions are described.

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Application Note

Analysis of 4-Aminobiphenyl and 4-Bromoanilin on normal phase TLC using TLC/MS

Co-authored with Merck Millipore in Darmstadt, Germany, this application note provides an example of TLC/CMS (thin-layer chromatography-compact mass spectrometry) for the determination of 4-aminobiphenyl in its reaction mixture.

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Application Note

Analysis of 4-Aminobiphenyl and 4-Bromoanilin on reversed phase TLC using TLC/MS

Co-authored with Merck Millipore in Darmstadt, Germany, this application note demonstrates a TLC/CMS (thin-layer chromatography-compact mass spectrometry) technique for the rapid determination of 4-aminobiphenyl in its reaction mixture.

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Application Note

Suzuki Reaction Monitoring Using Compact Mass Spectrometry with TLC Interface

This application note presents an online thin-layer chromatography (TLC)/CMS technique using the Advion expression compact mass spectrometer (CMS) and Plate ExpressTM interface to provide compound structural information without sample preparation after TLC separation. A Suzuki reaction for the synthesis of 4-aminobiphenyl will be demonstrated. The online TLC/CMS technique provides rapid and accurate determination of reaction…

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Application Note

Analysis of Two Reaction Products by Direct Analysis Probe on a Compact Mass Spectrometer

The expression CMS provides essential compound information quickly and improves the chemist’s workflow. The Atmospheric Solids Analysis Probe (ASAP®) permits fast analysis of solid and liquid samples and is a simple, low cost alternative to LC/MS methods. This direct analysis probe method has been shown to be useful for the analysis of volatile and semivolatile…

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Application Note

Reaction Monitoring by Direct Analysis Probe on a Compact Mass Spectrometer

The expression CMS provides essential compound information quickly and improves the chemist’s workflow. The Atmospheric Solids Analysis Probe (ASAP®) permits fast analysis of solid and liquid samples and is a simple, faster and lower cost alternative to LC/MS methods. This direct analysis probe method has been shown to be useful for the analysis of volatile…

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Application Note

Real Time Reaction Monitoring of a Solution Phase Peptide Synthesis

Real-time reaction monitoring based on the expression compact mass spectrometer (CMS) can support the synthetic chemist to overcome synthesis challenges and optimize the reaction time on-line. Peptides of pharmaceutical interest can be readily synthesized following a rapid, continuous solution-phase synthesis strategy based on Fmoc protected amino acid building blocks 1. A simple model for such…

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Application Note

Real-time monitoring of Suzuki reaction using compact mass spectrometry via LC/MS and flow injection (FI)/MS

Advion demonstrates a novel compact single quadrupole mass spectrometer for hood-based applications in the analysis of chemical reactions employing either LC/MS or flow injection (FIA).

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