The IUPAC-condensed notation is a compact form of IUPAC-extended notation.
It is used by the GlyConnect database.
It contains the following information:
Monosaccharide name, e.g. "Gal", "GlcNAc", "Neu5Ac".
Substituent, e.g. "9Ac", "4Ac", "3Me", "?S".
Linkage, e.g. "b1-3", "a1-2", "a1-?".
An example of IUPAC-condensed string is "Gal(b1-3)GlcNAc(b1-4)Glc(a1-".
The reducing-end monosaccharide can be with or without anomer information.
For example, the two strings below are all valid:
In the first case, the anomer is "a2".
In the second case, the anomer is "?2".