Lapatinib

Product Description

Lapatinib is a potent and selective dual ErbB2 (HER-2) and EGFR inhibitor (IC₅₀ values are 9.8 and 10.2 nM, respectively). Selective for EGFR and ErbB-2 versus other proliferative kinases. Inhibits proliferation in multiple cancer cell lines (average IC₅₀ values <0.16 μM). Exhibits 100-fold average selectivity for the tumor cells versus human foreskin fibroblasts. Inhibits EGFR/ErbB2 autophosphorylation and phosphorylation of the downstream modulator AKT.

Solubility

Preparing Stock Solutions for Lapatinib

The following data is based on the product molecular weight 581.06

Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which all affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:

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Concentration / Solvent Volume / Mass	1 mg	5 mg	10 mg
1 mM	1.72 mL	8.60 mL	17.21 mL
5 mM	0.34 mL	1.72 mL	3.44 mL
10 mM	0.17 mL	0.86 mL	1.72 mL
50 mM	0.03 mL	0.17 mL	0.34 mL

Calculators

Background References

References are publications that support the biological activity of the product.

• Rusnak The effects of the novel, reversible epidermal growth factor receptor/ErbB-2 tyrosine kinase inhibitor, GW2016, on the growth of human normal and tumor-derived cell lines in vitro and in vivo. Mol.Cancer Ther. 2001 PMID: 12467226