https://doi.org/10.1351/goldbook.M04073
The change in @O04312@ accompanying @E02166@. In sugar chemistry this term usually refers to @E02166@ at the hemiacetal carbon atom.
Source:
PAC, 1996, 68, 2193. (Basic terminology of stereochemistry (IUPAC Recommendations 1996)) on page 2212 [Terms] [Paper]