Adenosine is a nucleoside comprised of adenine attached to a ribose (ribofuranose) moiety via a -N9-glycosidic bond. Deoxyadenosine monophosphate is a derivative of the common nucleic acid ATP or adenosine triphosphate in which the -OH (hydroxyl) group on the 2' carbon on the nucleotide's pentose has been removed (hence the deoxy- part of the name).

Exendin-3/4 (59-86) is a Exendin-4 peptide derivative.

HS271 is a highly potent, orally active and selective IRAK4 inhibitor, with an IC50 of 7.2 μM. HS271 exhibits superior enzymatic and cellular activities, as well as excellent pharmacokinetic properties.