Abstract
1. Fragmentation of the negative molecular ions of the acetates of the pyranosides of the pentoses and hexoses proceeds through elimination of CH2CO; CH3CO; CH3COO; CH3COOH, and (CH3CO)2O fragments without skeletal rearrangement. 2. The sequence of elimination and the intensities of the resultant negative ion peaks are determined by the structure and stereochemistry of the molecule.
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