IRBP (1-20), human is the 1-20 fragment of interphotoreceptor retinoid binding protein (IRBP).This peptide is a 1 to 20 amino acid fragment of the interphotoreceptor retinoid binding protein (IRBP). IRBP is a 140-kDa glycolipoprotein residing in the interphotoreceptor matrix between the neural retina and the retinal pigment epithelium.

DL-O-Phosphoserine a normal metabolite in human biofluid is an ester of serine and phosphoric acid. Serine is one of three amino acid residues that are commonly phosphorylated by kinases during cell signaling in eukaryotes.

Flonicamid, a pyridinecarboxamide insecticide, inhibits aphid (M. persicae) salivation and sap ingestion during feeding on Japanese radish leaves.