Molecular Weight: 468.46 g/mol

SPI-112 Chemical Structure
Chemical Structure
Check the SPI-112 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 94 mg/mL (200.65 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 3-[[5-[(4-fluorophenyl)methylsulfamoyl]-2-hydroxy-1H-indol-3-yl]diazenyl]benzoic acid
CAS Number 1051387-90-6
Molecular Formula

C22H17FN4O5S
Molecular Weight (MW) 468.46
SMILES C1=CC(=CC(=C1)N=NC2=C(NC3=C2C=C(C=C3)S(=O)(=O)NCC4=CC=C(C=C4)F)O)C(=O)O
InChIKey ZSXZSNNAEVDPNL-UHFFFAOYSA-N

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