Oxotremorine M iodide is a potent and non-selective agonist of muscarinic acetylcholine receptor (mAChR).

Ac-KQKLR-AMC (Cathepsin S substrate) is a biological active peptide. (Cathepsins are a class of globular lysosomal proteases, playing a vital role in mammalian cellular turnover. They degrade polypeptides and are distinguished by their substrate specificities. Cathepsin S is a cysteine proteinase involved in the pathogenesis of autoimmune diseases, atherosclerosis, cancer, obesity and related diseases.This peptide is a cathepsin S substrate fluorescently labeled with AMC (Ex/Em=354 nm/442 nm). It can be used to measure cathepsin S activity.)

Xanthosine is produced by guanine-free mutants of bacteria e.g. Bacillus subtilis Aerobacter aerogenes. Xanthosine monophosphate is an intermediate in purine metabolism formed from IMP and forming GMP.