Molecular Weight: 255.23 g/mol

Nalidixic acid sodium salt Chemical Structure
Chemical Structure
Check the Nalidixic acid sodium salt 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
Water 51 mg/mL
Ethanol 3 mg/mL
DMSO Insoluble
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)
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).

Chemical Information

IUPAC Name sodium 1-ethyl-7-methyl-4-oxo-1,8-naphthyridine-3-carboxylate
CAS Number 3374-05-8
Molecular Formula

C12H12N2O3.Na
Molecular Weight (MW) 255.23
InChIKey ROKRAUFZFDQWLE-UHFFFAOYSA-M

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