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LCMS: Southern District; LCMS Congregation Directory; Erster Synodal-Bricht des Südlichen Distrikts der deutschen evang.-luth. Synode von Missouri Ohio u. a. Staaten Anno domini 1882-1895; Berhandlunger der eslsten Jahresversammlung des Südlichen Distrikts der deutschen evang.-lutherischen Synode von Missouri, Ohio, und anderen Staaten (1897 ...
Formate is a common C-1 source in living systems. It is formed from many precursors including choline, serine, and sarcosine. It provides a C-1 source in the biosynthesis of some nucleic acids. Formate (or formic acid) is invoked as a leaving group in the demethylation of some sterols. [2]
Palladium acetate is a catalyst for many organic reactions, especially alkenes, dienes, and alkyl, aryl, and vinyl halides to form reactive adducts. [9] Reactions catalyzed by palladium(II) acetate: Vinylation: An example is the Heck reaction and related processes. [10] Rearrangement of acyclic dienes: An example is the Cope rearrangement
Ammonium formate can be used for reductive amination of aldehydes and ketones (Leuckart reaction), by the following reaction: [5] Ammonium formate can be used as a mobile phase additive in high performance liquid chromatography (HPLC), and is suitable for use with liquid chromatography-mass spectrometry (LC/MS).
A good example is the formation of adducts between the Lewis acid borane and the oxygen atom in the Lewis bases, tetrahydrofuran (THF): BH 3 ·O(CH 2) 4 or diethyl ether: BH 3 ·O(CH 3 CH 2) 2. Many Lewis acids and Lewis bases reacting in the gas phase or in non-aqueous solvents to form adducts have been examined in the ECW model . [ 3 ]
Atmospheric pressure chemical ionization chamber cross section. Atmospheric pressure chemical ionization (APCI) is an ionization method used in mass spectrometry which utilizes gas-phase ion-molecule reactions at atmospheric pressure (10 5 Pa), [1] [2] commonly coupled with high-performance liquid chromatography (HPLC). [3]
DART resulted from conversations between Laramee and Cody about the development of an atmospheric pressure ion source to replace the radioactive sources in handheld chemical weapons detectors.DART was developed in late 2002 to early 2003 by Cody and Laramee as a new atmospheric pressure ionization process, [2] and a US patent application was filed in April 2003.
Ion suppression in LC-MS and LC-MS/MS refers to reduced detector response, or signal:noise as a manifested effect of competition for ionisation efficiency in the ionisation source, between the analyte(s) of interest and other endogenous or exogenous (e.g. plasticisers extracted from plastic tubes, [1] mobile phase additives) species which have not been removed from the sample matrix during ...