Will, Jonas M.;Behrens, Arne;Macke, Marcel;Quarles, C. Derrick Jr.;Karst, Uwe published 《Automated chiral analysis of amino acids based on chiral derivatization and trapped ion mobility-mass spectrometry》. The research results were published in《Analytical Chemistry (Washington, DC, United States)》 in 2021.Related Products of 39637-74-6 The article conveys some information:
A fast and fully automated method for chiral anal. has been developed by combining a chiral derivatization approach with high-resolution trapped ion mobility separation Although the presented approach can be potentially applied to diverse types of chiral compounds, several benchmark amino acids were used as model compounds, focusing on the smallest amino acid alanine. An autosampler with an integrated chromatog. system was used for inline chiral derivatization with (S)-naproxen chloride and subsequent presepn. Afterwards, derivatized amino acids were directly introduced into the electrospray interface of a trapped ion mobility-mass spectrometer for rapid diastereomer separation in the gas phase. This unique combination of presepn. and trapped ion mobility spectrometry separation in the neg. ion mode enabled rapid chiral anal. within 3 min per sample. Furthermore, the diastereomer separation proved to be independent of alkali salts or other metal ions, offering robustness with regard to samples containing high amounts of salts. Highly sensitive detection of amino acid diastereomers was possible down to the lower nanomolar concentration range, and enantiomeric ratios could be readily determined from the recorded mobilograms with excellent reproducibility and precision. To demonstrate the general applicability of our method, alanine and other amino acids were analyzed from soy sauces and seasonings, which revealed extraordinarily high
(1S)-4,7,7-Trimethyl-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carbonyl chloride(Chunks or pellets) (cas: 39637-74-6 Related Products of 39637-74-6) is used as a resolving agent for alcohols as the diastereomeric esters by crystallization or chromatography and as a chiral derivatization reagent for determination of enantiomeric excess of alcohols and amines.
Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics