Molecular Weight: 422.46 g/mol

HS-173 Chemical Structure
Chemical Structure
Check the HS-173 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

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 42 mg/mL (99.41 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in 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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Chemical Information

IUPAC Name ethyl 6-[5-(benzenesulfonamido)-3-pyridinyl]imidazo[1,2-a]pyridine-3-carboxylate
CAS Number 1276110-06-5
Molecular Formula

C21H18N4O4S
Molecular Weight (MW) 422.46
SMILES CCOC(=O)C1=CN=C2N1C=C(C=C2)C3=CC(=CN=C3)NS(=O)(=O)C4=CC=CC=C4
InChIKey SEKOTFCHZNXZMM-UHFFFAOYSA-N

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