CAS No. 52029-86-4

Batch: Purity:99.89
STO-609 Chemical Structure
Chemical Structure
Check the STO-609 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 11-oxo-3,10-diazapentacyclo[10.7.1.02,10.04,9.016,20]icosa-1(20),2,4,6,8,12,14,16,18-nonaene-17-carboxylic acid
CAS Number 52029-86-4
Molecular Formula

C19H10N2O3

Molecular Weight (MW) 314.29
SMILES C1=CC=C2C(=C1)N=C3N2C(=O)C4=CC=CC5=C(C=CC3=C54)C(=O)O
InChIKey MYKOWOGZBMOVBJ-UHFFFAOYSA-N

Ordering Information

Biological Activity

STO-609 is a selective inhibitor of Ca2+/calmodulin-dependent protein kinase kinase (CaM-KK), blocking recombinant CaM-KKα (Ki 80 ng/ml) and CaM-KKβ (Ki 15 ng/ml). By inhibiting CaM-KK activity and its autophosphorylation, STO-609 suppresses downstream targets including CaMKI, CaMKIV, and AMPK. Blockade of the CaM-KK/AMPK signaling cascade disrupts cell proliferation, metabolic regulation, cellular growth, and autophagy in various mammalian cell types. [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 2 mg/mL (6.36 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)
Water Insoluble
Ethanol Insoluble
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.