GRK5-IN-5 (Compound 4a) is a selective G protein-coupled receptor (GPCR) kinase 5 (GRK5) inhibitor with an IC50 of 0.03 μM. GRK5-IN-5 shows IC50 values of 2.2 and 0.036 μM for GRK2 and GRK6. GRK5-IN-5 has potent anti-myocardial hypertrophy activity and also inhibits the proliferation of non-myocardial cells. GRK5-IN-5 can inhibit the abnormal upregulation of hypertrophy marker genes Nppa and Nppb, thus blocking pathological myocardial remodeling. GRK5-IN-5 can be used for the research of cardiac hypertrophy.

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.