WZ4002-hydroxy is a WZ4002 (MedKoo Cat#: 203170) derivative or WZ4002 analog. In which the methoxy group is replaced by hydroxy group. WZ4002 is EGFR inhibitor against EGFR T790M (mutation of the gatekeeper T790 residue) which is detected in 50% of clinically resistant patients to gefitinib or erlotinib. WZ4002 has a basic chemical framework (covalent pyrimidine) which is different from that of other EGFR inhibitors.

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.