(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.

FEN1-IN-3 (Compound 4) 是一种人类皮瓣内切核酸酶-1 (hFEN1) 抑制剂。FEN1-IN-3 可使 hFEN1 稳定化，EC50 为 6.8 μM。

Citreorosein is a cAMP phosphodiesterase inhibitor, it has anti-inflammatory effect, inhibits proinflammatory cytokines production through the inhibition of both MAPKs and AKT-mediated IκB kinase (IKK) phosphorylation and subsequent inhibition of transcription factor NF-κB activation.