2D Structure
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2D chemical structural formula diagram.
3D Structure
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This 3D model represents a theoretically simulated conformation and is for reference only.
Check the
Acid orange 7
product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.
| CAS Number | 633-96-5 | |
|---|---|---|
| Molecular Formula |
C16H11N2NaO4S |
|
| Molecular Weight (MW) | 350.32 | |
| SMILES | C1=CC=C2C(=C1)C=CC(=C2N=NC3=CC=C(C=C3)S(=O)(=O)[O-])O.[Na+] |
|
Concentration
Volume
Mass
|
|---|
Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
| Solvent | Solubility & Note |
|---|---|
| DMSO |
19 mg/mL
(54.23 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
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).
Note: Technical data last updated: Sep 1, 2026.