Antennapedia Peptide TFA is a 16 amino acid peptide (RQIKIWFQNRRMKWKK). The DNA binding domain of the Drosophila transcription factor (Antennapedia), a 60 amino acid protein, is rapidly taken up by cells and has been fused to selected antigens to enhance their immunogenicity. A 16 amino acid peptide Antennapedia Peptide TFA from Antennapedia can facilitate the cytoplasmic uptake of cytotoxic T lymphocyte epitope 9-mer peptides.

Schistoflrfamide, a FMRFamide-related peptide, is an inhibitory neuropeptide. Schistoflrfamide decreases the amplitude and frequency of myogenic contractions and reduce basal tension visceral muscle.

Gymnoside IX (compound 2) can be isolated from the methanolic extract from the tubers of Gymnadenia conopsea.