Molecular Weight: 389.38 g/mol
Chemical Structure
Check the
Fluorescein-5-isothiocyanate (FITC)
product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.
Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
| Solvent | Solubility & Note |
|---|---|
| DMSO |
78 mg/mL
(200.31 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Ethanol | 10 mg/mL |
| Water | Insoluble |
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).
| CAS Number | 3326-32-7 | |
|---|---|---|
| Molecular Formula |
C21H11NO5S |
|
| Molecular Weight (MW) | 389.38 | |
| SMILES | OC1=CC2=C(C=C1)C3(OC(=O)C4=C3C=CC(=C4)N=C=S)C5=C(O2)C=C(O)C=C5 |
- Fluorescein-5-isothiocyanate (FITC) Clinical Trials
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- Fluorescein-5-isothiocyanate (FITC) SMILES
- Fluorescein-5-isothiocyanate (FITC) CAS Number
- Fluorescein-5-isothiocyanate (FITC) Chemical Structure (2D and 3D)
- Fluorescein-5-isothiocyanate (FITC) SDS｜MSDS
Note: Technical data last updated: Sep 1, 2026.