A convenient set consisting of eight Receptor Tyrosine Kinase (RTK) inhibitors. The eight inhibitors are: 5 mg of Axitinib (Cat. No. 1581-5), 5 mg of Canertinib (Cat. No. 1617-5), 5 mg of Gefitinib (Cat. No. 1589-5), 5 mg of GW2580 (Cat. No. 1740-5), 25 mg of Lapatinib Ditosylate (Cat. No. 1624-25), 1 mg of PD-173074 (Cat. No. 1675-1), 1 mg of SB-431542 (Cat. No. 1674-1), and 100 mg of Sunitinib Malate (Cat. No. 1611-100).