Rhodopsin Epitope Tag is a 9-amino acid peptide representing C terminus of bovine rhodopsin widely used as an epitope tag. A number of anti-rhodopsin antibodies can recognize this epitope.

C-telopeptide, a cross-linked peptide of type I collagen, is released during bone resorption and has been correlated with bone mineral density (BMD).

The P7C3 class of neuroprotective aminopropyl carbazoles has been shown to block neuronal cell death in models of neurodegeneration.