Proinsulin C-peptide (human) is a 31-amino acid peptide that connects the Proinsulin a and B chains, ensuring its proper folding, biological activity, and regulation of cellular functions.

(R,S)-Anatabine is a minor tobacco alkaloid found in the Solanaceae family of plants,and can be used as a specific marker for the detection of tobacco use.

Alclofenac has a significant effect on the acute phase protein response and the degree of L-tryptophan binding to plasma protein and can be used in the treatment of patients with chronic rheumatism.