CAS No. 2319647-76-0

Batch: Purity:99.42
OTS514 hydrochloride Chemical Structure
Chemical Structure
Check the OTS514 hydrochloride product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 9-[4-[(2R)-1-aminopropan-2-yl]phenyl]-8-hydroxy-6-methyl-5H-thieno[2,3-c]quinolin-4-one;hydrochloride
CAS Number 2319647-76-0
Molecular Formula

C21H20N2O2S.HCl

Molecular Weight (MW) 400.92
SMILES Cl.CC(CN)C1=CC=C(C=C1)C2=C3C(=C(C)C=C2O)NC(=O)C4=C3C=CS4
InChIKey CQPRMBOOBXSZSP-YDALLXLXSA-N

Ordering Information

Biological Activity

OTS514 hydrochloride is a highly potent inhibitor of TOPK (T-LAK cell-originated protein kinase) with an IC50 value of. By blocking TOPK catalytic activity, OTS514 disrupts downstream signaling pathways required for mitotic progression and cell survival. Consequently, treatment with this compound leads to cytokinesis failure, cell cycle arrest at the G2/M phase, and the induction of apoptosis in various cancer cell lines. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 80 mg/mL (199.54 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 80 mg/mL
Ethanol 5 mg/mL
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

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Note: Technical data last updated: Sep 1, 2026.