Transcription of Chemical Standards - SUPELCO
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Chemical Standards - SUPELCO
611 ChemicalStandardsSUPELCO611 Order: Technical Service: Web: ReagentsAcylation, an alternative to silylation, is the conversion of compounds that contain active hydrogens (-OH, -SH and -NH) into esters,thioesters, and amides through the action of a carboxylic acid or derivative. The presence of a carbonyl group adjacent to the haloge-nated carbons enhances electron capture detector (ECD) has many benefits: It improves stability of compounds by protecting unstable groups. It may confer volatility on substances such as carbohydrates or amino acids, which have so many polar groupings that they are nonvolatileand normally decompose on heating. It assists in separations not possible with underivatized compounds. Compounds are detectable at very low levels with an Acid Anhydrides Acylation reduces the polarity of amino, hydroxyl, and thiol groups to form perfluoroacyl derivatives,which are both stable and highly volatile. Fluorinated anhydride derivatives are used primarily for ECD, but also can be used for flameionization detection (FID).
613 Chemical Standards Order: 1.800.325.3010 Technical Service: 1.800.359.3041 Web: www.sigma-aldrich.com/supelco SUPELCO Alkylation Reagents DESCRIPTION CAT. …
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