SG 209 is an analog of nicorandil and acts as a K+ channel opener and nitrate-free coronary vasodilator.

Chromostatin bovine is a chromogranin A (CGA) derivative peptide, which inhibits postassium or carbamoylcholine induced catecholamine release with an ID50 of 5 nM. Chromostatin bovine reduces calcium flux, enhances the desensitization process of the cholinergic-evoked secretory response and modulates the endocrine response associated with catecholamine.

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.