ZT-12-037-01 is a potent, selective, ATP-competitive STK19 inhibitor with IC50 of 20.04 nM measured as percentage of NRAS phosphorylation; shows similar IC50 of 23.96 and 27.94 nM for STK19WTWT STK19D89N respectively; displays extremely high kinase selectivity using KINOMEscan against a panel of 468 diverse kinases using an in vitro ATP-site competition binding assay at 1 uM; efficiently inhibits phosphorylation of NRAS in a dose- and time-dependent manner, inhibits NRAS activity in a dose-dependent manner but does not affect the levels of H3K9 methylation; effectively inhibits NRAS signaling, including the MEK-ERK and PI3K pathways in SK-MEL-2 and WM2032 cells (with NRASQ61R), but the inhibition was much less effective in A375 or UACC62 cells (with NRASWT), effectively inhibits cell growth and induces apoptosis of SK-MEL-2 and WM2032 melanoma cells.

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.

[1]. Yin C, et al. Pharmacological Targeting of STK19 Inhibits Oncogenic NRAS-Driven Melanomagenesis. Cell. 2019 Feb 21;176(5):1113-1127.e16.