DCA-Mln
DCA-Mln is a Fluorescent probe for ferric iron (Fe³⁺) detection. The probe works via an internal charge transfer (ICT) process from its diethylamino group to its dicyano group, which produces bright pink fluorescence in its unbound state; when Fe³⁺ is present, two molecules of DCA-Mln chelate with one Fe³⁺ ion, with one cyano group of each DCA-Mln participating in the complexation, and this binding triggers a photoinduced electron transfer (PET) process that provides a nonradiative deactivation pathway, resulting in fluorescence quenching; additionally, the probe exhibits a visible color change from purple to peach pink upon Fe³⁺ binding, enabling dual-channel detection. The probe has an excitation wavelength of 570 nm and an emission wavelength of 670 nm, and it shows a rapid response, with fluorescence stabilizing within 15 seconds of Fe³⁺ addition. DCA-Mln is cell-membrane-permeable, nontoxic at the imaging concentration of 10 μM, and can be used for Fe³⁺ detection in actual water samples, Fe³⁺ imaging in living cells, and as an anti-counterfeiting ink[1].
For research use only. We do not sell to patients.
- CAS No.: 455251-97-5
- Formula: C20H19N3O
- Molecular Weight:317.38
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
Description
In Vitro
Guidelines (The following is a recommended experimental protocol provided for guidance only; please adjust according to actual requirements)
1. Stock Solution Preparation
1.1 Solvent: MeOH–H₂O (5/5, v/v).
1.2 Concentration recommendation: 10 μM.
2. Working Solution Preparation
2.1 Diluent: MeOH–H₂O (5/5, v/v); PBS buffer; filtered natural water/methanol (5/5, v/v); ethanol with a small amount of glycerin.
2.2 Working concentration: 10 μM.
2.3 Note: Adjust working solution concentration as needed; prepare fresh before use.
3. Staining Procedure
3.1 Sample type:[1]
3.1.1 Adherent cells (MCF-7 cells).
3.2 Incubation conditions: Incubate adherent cells with 10 μM DCA-Mln for 30 min; then incubate with 0–600 μM Fe³⁺ for 30 min.
3.3 Washing steps: Wash cells twice with PBS buffer.
4. Detection & Analysis
5.1 Instrument: Fluorescence imaging system; UV-vis spectrophotometer
5.1.1 Ex = 570 nm, Em = 670 nm.
5.2 Result analysis:
5.2.1 Fluorescence intensity changes: Strong red fluorescence intensity decreases with increasing Fe³⁺ concentration; solution fluorescence changes from strong pink to non-fluorescence upon Fe³⁺ addition.
5.2.2 Color changes: Solution color changes from purple to peach pink upon Fe³⁺ addition; anti-counterfeiting ink imprints are purple in daylight and bright pink under 365 nm UV light.
5.2.3 Fluorescence localization: Red fluorescence is present in the cytoplasm of living MCF-7 cells.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only. Further protocols information, click here.
Chemical Information
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CAS No. 455251-97-5
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Molecular Weight 317.38
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Formula C20H19N3O
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SMILES
CCN(C1=CC=C2C=C3CCC(/C=C(C#N)/C#N)=C3OC2=C1)CC
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Protocols
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Perls' Prussian Blue Iron Staining
Perls' Prussian blue staining is a histochemical method used to detect non-heme ferric iron (Fe3+) in biological tissues by exploiting an acid-mediated release of loosely bound iron from storage complexes such as ferritin or hemosiderin, followed by its reaction with potassium ferrocyanide to form an insoluble blue ferric ferrocyanide (Prussian blue) precipitate that marks iron localization under light microscopy. The reaction is classically performed under acidic conditions, which liberate Fe3+ ions that subsequently bind ferrocyanide to generate the visible chromogen, enabling spatial visualization of iron deposits in tissues such as brain, liver, and spleen. Histochemical interpretations are limited to a reactive iron pool rather than total iron content, reflecting only histologically accessible iron species rather than tightly protein-bound iron.
Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)