GW 583340 dihydrochloride is a potent dual EGFR/ErbB2 tyrosine kinase inhibitor (IC50 values are 0.01 and 0.014 μM respectively). GW 583340 dihydrochloride selectively inhibits growth of human tumor cells overexpressing EGFR and ErbB2 (IC50 values are 0.11 μM for inhibition of HN5, N87 and BT474 tumor cell lines vs. > 30 μM for inhibition of non-tumor cell line HFF).

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.