Molecular Weight: 356.74 g/mol

CTPI-2 Chemical Structure
Chemical Structure
Check the CTPI-2 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 71 mg/mL (199.02 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 35 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).
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Chemical Information

IUPAC Name 2-[(4-chloro-3-nitrophenyl)sulfonylamino]benzoic acid
CAS Number 68003-38-3
Molecular Formula

C13H9ClN2O6S
Molecular Weight (MW) 356.74
SMILES OC(=O)C1=CC=CC=C1N[S](=O)(=O)C2=CC(=C(Cl)C=C2)[N+]([O-])=O
InChIKey NJTHPOSQGFJTDP-UHFFFAOYSA-N

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