206700

Calcein-AM

A cell-permeable, non-fluorescent, and hydrophobic compound, which is rapidly hydrolyzed by intracellular esterases releasing the membrane-impermeable, hydrophilic, and intensely fluorescent calcein.

• Synonym(s): Calcein-AM, Calcein-acetoxymethyl Ester, Diacetate, CAL-AM
• Empirical Formula (Hill Notation): C₄₆H₄₆N₂O₂₃
• CAS Number: 148504-34-1
• Molecular Weight: 994.86
• MDL number: MFCD05861516
• UNSPSC Code: 12171500
• NACRES: NA.25

Properties

• Quality Level: 100
• assay: ≥90% (HPLC)
• form: solid
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; protect from light
• color: off-white
• solubility: DMSO: 5 mg/mL
• fluorescence: λ_ex 494 nm; λ_em 517 nm
• shipped in: ambient
• storage temp.: −20°C
• InChI: 1S/C46H46N2O23/c1-25(49)60-21-64-41(55)17-47(18-42(56)65-22-61-26(2)50)15-31-11-35-39(13-37(31)68-29(5)53)70-40-14-38(69-30(6)54)32(12-36(40)46(35)34-10-8-7-9-33(34)45(59)71-46)16-48(19-43(57)66-23-62-27(3)51)20-44(58)67-24-63-28(4)52/h7-14H,15-24H2,1-6H3
• InChI key: BQRGNLJZBFXNCZ-UHFFFAOYSA-N

Description

General description

A cell-permeable, non-fluorescent, and hydrophobic compound, which is rapidly hydrolyzed by intracellular esterases releasing the membrane-impermeable, hydrophilic, and intensely fluorescent calcein. Can also be used for imaging mitochondrial permeability pore transition. Calcein is better retained by viable cells than fluorescein, carboxyfluorescein, or BCECF, and its fluorescence is brighter in a variety of mammalian cell types. Useful for assessing adhesion, cell viability, chemotaxis, and multidrug resistance (MDR).

A cell-permeable, nonfluorescent, and hydrophobic compound, which is rapidly hydrolyzed by cytoplasmic esterases inside the cell, releasing the membrane-impermeable, hydrophilic, and intensely fluorescent calcein (excitation maximum: 494 nm; emission maximum: 517 nm). A cytosolic fluorophore that can also be used imaging mitochondrial permeability pore transition. Calcein is better retained by viable cells than fluorescein, carboxyfluorescein, and BCECF and its fluorescence is brighter in a variety of mammalian cell types. Useful for assessing adhesion, cell viability, chemotaxis and multidrug resistance (MDR).

Biochem/physiol Actions

Cell permeable: yes

Primary Target
Imaging mitochondrial permeability pore transition

Product does not compete with ATP.

Reversible: no

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 4 months at -20°C.

Other Notes

Dhar, S., et al. 1998. Eur. J. Pharmacol. 346, 315.
Essodaigui, M., et al. 1998. Biochemistry 37, 2243.
Lemasters, J.J., et al. 1998. Biochim. Biophys. Acta 1366, 177.
Feller, N., et al. 1995. Br. J. Cancer 72, 543.
Feller, N., et al. 1995. FEBS Lett. 368, 385.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable