Pan-Trk-IN-3 is a potent, broad-spectrum inhibitor of Trk and its drug-resistant mutants, acting on TrkA (IC50: 2 nM), TrkB (IC50: 3 nM), TrkC (IC50: 2 nM), TrkAG595R (IC50: 21 nM), TrkAG667C (IC50: 26 nM), TrkAG667S (IC50: 5 nM), TrkAF589L (IC50: 7 nM) and TrkCG623R (IC50: 6 nM), TrkAG667S (IC50: 5 nM), TrkAF589L (IC50: 7 nM) and TrkCG623R (IC50: 6 nM). Pan-Trk-IN-3 induces apoptosis and has significant anti-tumour effects.