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OTS167

Chemical Structure : OTS167

CAS No.: 1431697-89-0

OTS167 (OTSSP167, OTS-167)

Catalog No.: PC-44480Not For Human Use, Lab Use Only.

OTSSP167 (OTS167) is a highly potent, selective and orally active MELK (maternal embryonic leucine zipper kinase) inhibitor with IC50 of 0.41 nM.

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Purity & Documentation Purity: >98% (HPLC) Select Batch:

Biological Activity

OTSSP167 (OTS167) is a highly potent, selective and orally active MELK (maternal embryonic leucine zipper kinase) inhibitor with IC50 of 0.41 nM.
OTSSP167 demonsrates in vitro anti-proliferative against MELK-highly expressed A549 (lung), T47D (breast), DU4475 (breast), and 22Rv1 (prostate) cancer cells with IC50 of 6.7, 4.3, 2.3, and 6.0 nM, respectively, with significant lower activity against HT1197 (bladder, low-MELK expression) cancer cells (IC50=97 nM).
OTSSP167 shows the effectiveness on the growth of various human cancer xenograft.
OTSSP167 inhibits the phosphorylation of novel MELK substrates, significantly suppresses the phosphorylation levels of DBNL and PSMA1 in breast cancer cell lines.

Physicochemical Properties

M.Wt 487.4214
Formula C25H28Cl2N4O2
Appearance Solid
CAS No.
Storage
Solide Powder
-20 °C 12 Months; 4°C 6 Months
In Solvent
-80 °C 6 Months; -20°C 6 Months
Shipping
Solubility

10 mM in DMSO

Chemical Name/SMILES

1-(6-(3,5-dichloro-4-hydroxyphenyl)-4-(((1r,4r)-4-((dimethylamino)methyl)cyclohexyl)amino)-1,5-naphthyridin-3-yl)ethanone

References

1. Chung S, et al. Oncotarget. 2012 Dec;3(12):1629-40.

2. Alachkar H, et al. Oncotarget. 2014 Dec 15;5(23):12371-82.

3. Stefka AT, et al. Blood Cancer J. 2016 Aug 19;6(8):e460.

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