Protein kinase inhibitors 1 is a novel inhibitor of HIPK2 with an IC50 of 74 nM and Kd of 9.5 nM.

(2R,3S,11bS)-9,10-dimethoxy-3-(2-methylpropyl)-1H,2H,3H,4H,6H,7H,11bH-pyrido[2,1-a]isoquinolin-2-ol is an impurity of Tetrabenazine, which is a VMAT inhibitor used in the treatment of hyperkinetic movement disorder.

Tioxazafen is a disubstituted oxadiazole, and is a broad-spectrum seed treatment nematicide.