A saccharide attached to a single amino acid by any kind of covalent bond
. A glycosyl-amino-acid is a compound consisting of saccharide linked through a glycosyl linkage (O
-, or S
-) to an amino acid.
The hyphens are needed to avoid implying that the carbohydrate is necessarily linked to the amino group.
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook