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Rapid Identification by a Precursor-Ion Scan

The GCTMS approach, although of great utility in composition analysis, is time consuming and labor intensive and requires large sample amounts. Attention has now shifted to several desorption-ionization techniques, such as fast atom bombardment (FAB), MALDI, and ESI. In some cases it may be [Pg.403]

TABLE 11.1. Derivatizing Agents for Reductive Amination of Carbohydrates [Pg.404]

TABLE 11.2. Common Monosaccharides and Their Accurate Masses [Pg.406]

Monosaccharide (Abbreviation) Examples (Abbreviation) Formula Mono- isotopic Average Mono- isotopic Average [Pg.406]

Hexcosamine Galactose (Gal) Mannose (Man) Glucosamine (GlcN) CsHbNOs 179.080 179.18 161.069 161.157 [Pg.406]

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A-scan

Precursor ion scanning

Precursor ions

Precursor-ion scan (

Scanning, rapid

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