CAS No. 541550-19-0

Batch: Purity:99.96
Apilimod (STA-5326) Chemical Structure
Chemical Structure
Check the Apilimod (STA-5326) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name N-[(E)-(3-methylphenyl)methylideneamino]-6-morpholin-4-yl-2-(2-pyridin-2-ylethoxy)pyrimidin-4-amine
CAS Number 541550-19-0
Molecular Formula

C23H26N6O2

Molecular Weight (MW) 418.49
SMILES CC1=CC(=CC=C1)C=NNC2=CC(=NC(=N2)OCCC3=CC=CC=N3)N4CCOCC4
InChIKey HSKAZIJJKRAJAV-KOEQRZSOSA-N

Ordering Information

Biological Activity

Apilimod (STA-5326) is a potent, cell-permeable PIKfyve inhibitor (IC50 = that selectively suppresses interleukin-12 (IL-12) and interleukin-23 (IL-23) cytokine production. By specifically inhibiting PIKfyve activity, apilimod disrupts phosphoinositide lipid metabolism and endolysosomal membrane trafficking pathways, thereby suppressing downstream inflammatory responses and cytokine expression in human monocytes and peripheral blood mononuclear cells. [1][2]

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 84 mg/mL (200.72 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 6 mg/mL
Water 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).

Aliquotting Service

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