α-D-Glucopyranose and β-D-Glucopyranose are:
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α-D-Glucopyranose and β-D-Glucopyranose are anomers. Anomers are a specific type of stereoisomer that differ in configuration only at the anomeric carbon (carbon-1 in glucose) in their cyclic form. They are not enantiomers (mirror images) but are diastereomers (stereoisomers that are not mirror images). The interconversion between these forms is called mutarotation.
Final answer: anomers