(Z)-PUGNAc, a potent O-GlcNAcase inhibitor more active than (E)-PUGNAc, removes O-GlcNAc from proteins (peptide O-GlcNAc-β-N-acetylaminoglucosidase) and can be used to increase levels of O-GlcNAc on nuclear and cytoplasmic proteins in vivo.

6-FAM SE is another isomer of carboxyfluorescein. 6-FAM SE is mainly used for labeling nucleotides and sequencing nucleic acids.

Purpureaside C is a phenolic glycoside with significant proinflammatory, immunomodulating and antimicrobial effects.