Kynurenic acid, a natural metabolite of tryptophan via the kynurenine pathway, is a broad-spectrum excitatory amino acid antagonist.

Lophine can be used in the synthesis of protein kinase inhibitors, calcium antagonists, strong Chemicalbook cardiac agents, and antitumor drugs.

(Nle8,18,Tyr34)-pTH (1-34) (human) 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.