2-Amino-6-cyclopropylamino-9H-purine,the key intermediate of abacavir was synthesized from ethyl cyanoacetate by nitrosation,cyclization with guanidine hydrochloride in the presence of EtONa and reduction to give 2,4,5-triamino-6-hydroxypyrimidine.

5(6)-FITC (Fluorescein 5(6)-isothiocyanate) is an amine-reactive derivative of fluorescein dye that has wide-ranging applications as a label for antibodies and other probes.

TH-263 is inactive toward both LIMK1 and LIMK2 and thus can be used as negative control for TH-257, and is a diaryl sulfonamide derivative.