Molecular Weight: 380.25 g/mol

O-304 Chemical Structure
Chemical Structure
Check the O-304 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 20 mg/mL (52.59 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).

Chemical Information

IUPAC Name 4-chloro-N-[2-[(4-chlorophenyl)methyl]-3-oxo-1,2,4-thiadiazol-5-yl]benzamide
CAS Number 1261289-04-6
Molecular Formula

C16H11Cl2N3O2S

Molecular Weight (MW) 380.25
SMILES C1=CC(=CC=C1CN2C(=O)N=C(S2)NC(=O)C3=CC=C(C=C3)Cl)Cl
InChIKey WEDWLYRQKUTOAX-UHFFFAOYSA-N
Note: Technical data last updated: Sep 1, 2026.