4-Methyl-2-pentanone is an organic solvent. It is occasionally found as a volatile component of urine. It in urine is considered a biological marker of occupational exposure to this solvent.

N-[2-nitro-4-(trifluoromethyl)phenyl]piperazine is a biologically active compound belonging to the piperazine group.

Neuromedin U-8 (porcine) 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.