Gas-Phase Separation of Benzocaine Protonation Site Isomers and Phenylalanine Using Travelling-Wave Ion Mobility MS

نویسندگان

  • Jonathan P. Williams
  • Martin Palmer
  • Jasper Boschmans
  • Filip Lemière
  • Frank Sobott
چکیده

■ ■ Alternative ion mobility gases may provide a better separation of isomeric/isobaric species IN T RO DU C T IO N As part of the newborn metabolic screening protocol, the early identification of babies at risk of a metabolic disorder allows for the correct medical treatment and management of selected inherited disorders. A particularly effective method for the analysis of certain metabolites from dried blood spots, which may indicate a metabolic disorder, is electrospray ionisation combined with tandem mass spectrometry. A number of inherited diseases result in the disruption of the metabolism and transformation of amino acids.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Structural Characterization of Methylenedianiline Regioisomers by Ion Mobility-Mass Spectrometry, Tandem Mass Spectrometry, and Computational Strategies: I. Electrospray Spectra of 2-Ring Isomers

Purified methylenedianiline (MDA) regioisomers were structurally characterized and differentiated using tandem mass spectrometry (MS/MS), ion mobility-mass spectrometry (IM-MS), and IM-MS/MS in conjunction with computational methods. It was determined that protonation sites on the isomers can vary depending on the position of amino groups, and the resulting protonation sites play a role in the ...

متن کامل

Collision cross-section determination of isomeric carotenoids using electrospray ion mobility time-of-flight mass spectrometry

Introduction Carotenoids are naturally occurring pigments that function as provitamin A compounds and antioxidants. Biosynthesized in plants as the all-trans isomers, carotenoids undergo isomerization to form multiple cis isomers which have been reported to have different bioavailabilities [1]. Although C30 stationary phases are available to facilitate the chromatographic separation of caroteno...

متن کامل

Protomers of benzocaine: solvent and permittivity dependence.

The immediate environment of a molecule can have a profound influence on its properties. Benzocaine, the ethyl ester of para-aminobenzoic acid that finds an application as a local anesthetic, is found to adopt in its protonated form at least two populations of distinct structures in the gas phase, and their relative intensities strongly depend on the properties of the solvent used in the electr...

متن کامل

Structural resolution of carbohydrate positional and structural isomers based on gas-phase ion mobility-mass spectrometry.

This report describes the rapid characterization of positional and structural carbohydrate isomers based on structural separations provided by ion mobility-mass spectrometry (IM-MS). Many of the diseases associated with glycoprotein variation can be more effectively treated with earlier detection substantiating the need for high-throughput methodologies for glycan characterization. This remains...

متن کامل

Discrimination of large maltooligosaccharides from isobaric dextran and pullulan using ion mobility mass spectrometry

RATIONALE Ion mobility mass spectrometry (IMMS) has previously been shown to resolve small isobaric oligosaccharides, but larger alpha-oligoglucans are also abundant in biology and are of industrial importance. If conformational differences between such isomers are retained in the gas phase, IMMS could be used to address questions in biology and industry. METHODS Negative mode electrospray io...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015