Secretin (5-27, porcine) (SQ 19301) is a polypeptide that can be found by peptide screening. Peptide screening is a research tool that pools active peptides primarily by immunoassay. Peptide screening can be used for protein interaction, functional analysis, epitope screening, especially in the field of agent research and development.

Pentachloropseudilin (PClP) is a reversible variant 1 myosin inhibitor with antimicrobial activity that inhibits Myo1s and class 5 myosins.

L-Gulonolactone (also known as reduced ascorbic acid RAA) is the substrate of the enzyme L-gulono-14-lactone oxidoreductase (EC 1.1.3.8) which catalyzes the last step of the biosynthesis of L-ascorbic acid (vitamin C) in plants and animals.