Calcein (solution)
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Calcein (solution) (Fluorexon (solution)) is a fluorescent dye and self-quenching probe, used as an indicator of lipid vesicle leakage, and also as a complexometric indicator for titration of calcium ions with EDTA, and for fluorometric determination of calcium. Calcein cannot directly cross the intact cell membrane of a living cell, unlike Calcein-AM (HY-D0041) which is cell-permeable. Calcein can also be used as a model drug for evaluating efficiency and bioavailability of drug delivery systems.
Solvent and concentration: DMSO: 2 mM
The 1 mL volume is defined as the base specification. All larger sizes correspond to incremental volumes of this base.
For research use only. We do not sell to patients.
- CAS No.: 1461-15-0
- Formula: C30H26N2O13
- Molecular Weight:622.53
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
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Biological Activity
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Chemical Information
- Purity & Documentation
- References
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Help & FAQs
Biological Activity
Solvent and concentration: DMSO: 2 mM
The 1 mL volume is defined as the base specification. All larger sizes correspond to incremental volumes of this base.
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| CHO | Inhibition |
105.616 %
Compound: CALCEIN
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Inhibition of sodium fluorescein uptake in OATP1B1-transfected CHO cells at an equimolar substrate-inhibitor concentration of 10 uM
Inhibition of sodium fluorescein uptake in OATP1B1-transfected CHO cells at an equimolar substrate-inhibitor concentration of 10 uM
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[PMID: 23571415] |
| CHO | Inhibition |
121.275 %
Compound: CALCEIN
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Inhibition of sodium fluorescein uptake in OATP1B3-transfected CHO cells at an equimolar substrate-inhibitor concentration of 10 uM
Inhibition of sodium fluorescein uptake in OATP1B3-transfected CHO cells at an equimolar substrate-inhibitor concentration of 10 uM
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[PMID: 23571415] |
Description: Calcein is a fluorescent probe with yellow green fluorescence, it can be used to determine labile iron pool and measure the Fe(III)-binding affinity with ligands[3].
Guide (The following is our recommended protocol. This protocol is only a guide and should be modified according to your specific needs).
1. Solution preparation[3]
1.1 Preparation of working solution
Dilute to 0.5 μM with PBS or cell culture medium.
Note: The working solution should be prepared and used immediately. Keep it away from light.
2. Cell staining
2.1 Cells (106/mL) are loaded by incubation with 20 μM Fe(II) for 2 h at 37°C.
2.2 Cells are collected by centrifugation (1000 rpm; 5 min) and Calcein (0.5 μM) is directly injected into the cells via microinjection for staining (5-15 mins).
2.3 Wash cells for twice by D’hanks buffer (pH 7.4).
2.4 The fluorescence is monitored by both flow cytometry and a confocal laser scanning microscope.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 1461-15-0
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Appearance Liquid (Density: 1.7±0.1 g/cm3)
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Molecular Weight 622.53
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Formula C30H26N2O13
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Color Light yellow to yellow
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SMILES
O=C1OC2(C3=C(OC4=C2C=C(CN(CC(O)=O)CC(O)=O)C(O)=C4)C=C(O)C(CN(CC(O)=O)CC(O)=O)=C3)C5=C1C=CC=C5
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Synonyms
Fluorexon (solution)
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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.
Purity & Documentation
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Data Sheet (274 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Marques-Santos LF, et al. ABCB1 and ABCC1-like transporters in immune system cells from sea urchins Echinometra lucunter and Echinus esculentus and oysters Crassostrea gasar and Crassostrea gigas. Fish Shellfish Immunol. 2017 Sep 5;70:195-203. [Content Brief]
[2]. Shao B, et al. Caffeic Acid Phenyl Ester (CAPE) Protects against Iron-Mediated Cellular DNA Damage through Its Strong Iron-Binding Ability and High Lipophilicity. Antioxidants (Basel). 2021 May 18;10(5):798. [Content Brief]
[3]. Maherani B, et al., Calcein release behavior from liposomal bilayer; influence of physicochemical/mechanical/structural properties of lipids. Biochimie. 2013 Nov;95(11):2018-33. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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