Molecular Weight: 248.28 g/mol

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

How to Prepare Stock Solution?

Concentration Volume Mass
🧮 Molarity Calculator

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 13 mg/mL (52.36 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in 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 1-phenyldiazenylnaphthalen-2-ol
CAS Number 842-07-9
Molecular Formula

C16H12N2O
Molecular Weight (MW) 248.28
SMILES C1=CC=C(C=C1)N=NC2=C(C=CC3=CC=CC=C32)O
InChIKey MRQIXHXHHPWVIL-UHFFFAOYSA-N

Jump to

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