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Enzyme Inhibitors Enzyme Inhibitors
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Special Labeling Reagents Special Labeling Reagents
Lipids Lipids
Carbohydrates/Oligosaccharides Carbohydrates/Oligosaccharides  
Fluorescent Reagents Fluorescent Reagents
Labeling Reagents

MarkerGene Technologies provides a variety of Fluorescent Labeling Reagents for use as standards for Cell Biology and Enzymology applications. The staff at MarkerGene Technologies is available to answer any questions and provide additional information.

  ID   Name   CAS Unit Size Price Bulk Price (5+)
M0972   MarkerGene™ TAMRA Antibody/Protein/Cell Labeling Kit 1 kit 191.40 153.12
Provides reagents and methods to simply and quickly label antibodies or other proteins with the amine-reactive dye 5(6)-carboxytetramethylrhodamine.
M1120   Sulforhodamine 101 sulfonyl chloride 82354-19-6 5 mg 65.45 52.36
Reactive red fluorophore which couples covalently to amino groups on proteins and other compounds. Suitable for use with FITC in dual parameter flow cytometry studies. Equivalent to Texas Red™.
M1459   Sulforhodamine 101 cadaverine - TFA salt 203866-87-9 5 mg 135.00 108.00
Texas Red™ Cadaverine is a useful labeling reagent for proteins and other biological molecules giving a stable, bright red fluorescence with excitation at 591 nm.
M1224   Rhodamine B octadecyl ester perchlorate 142179-00-8 10 mg 82.06 65.65
Lipophilic energy transfer acceptor from lipophilic fluoresceins in fluorescence energy transfer (FRET) assays in cell fusion experiments. Also used as a probe for measuring potassium in fiber-optic sensors.
M0535   Pyrene 8-hydroxy-1, 4, 6-trisulfonyl chloride N/A 10 mg 108.24 86.59
Useful for labeling amine groups of proteins, peptides or other compounds (drugs), and has unusual pH dependent fluorescence properties and pKa changes, after conjugation. Often called a "photoacid" because it can be transformed by light from a weak acid into a strong acid.
M0524   Pyrene 1-sulfonyl chloride 61494-52-8 25 mg 72.38 57.90
Useful amine reactive reagent for labeling proteins and peptides. The fluorescence emission is environment dependent.
M1227   8-Octadecyloxypyrene-1,3,6-trisulfonic acid trisodium salt 111024-84-1 10 mg 132.99 106.39
Highly water soluble polar fluorescent lipid probe for the sensitive fluorimetric assay of cationic surfactants.
M1076   10-Octadecylacridine orange bromide 75168-16-0 20 mg 101.86 81.49
Useful fluorescent mitochondrial membrane probe used to analyze mitochondria by flow cytometry and measure changes in mitochondrial mass during apoptosis.
M1410   4-Nitro-7-(1-piperazinyl)-2,1,3-benzoxadiazole 139332-66-4 10 mg 42.00 33.60
Widely used fluorophore that has the unusual environmentally sensitive property of increasing fluorescence in low pH environments.
M0500   NBD-X, SE 145195-58-0 25 mg 127.30 101.84
Fluorescent dye used to label amines.
M0270   Monofluoresceinated mannitol (MFM) N/A 10 mg 127.60 102.08
Has been used in labeling of the interstitial (intercellular) spaces between neurons in vitro.
M0093   Isethionyl acetimidate sodium salt hydrochloride 52914-43-9 1 g 25.52 20.42
Cell membrane cross-linking reagent.
M0638   5-(Iodoacetamido)fluorescein 63368-54-7 25 mg 57.90 46.32
Excellent thiol reactive fluorescein derivative for synthesis of fluorescently labeled organelles, proteins and peptides at or near their physiological pH values (pH 7) including enzymes (e.g. (Na, K)-ATPase) or organelles like nucleii and nuclear matrices.
M1111   2-Iminobiotin 13395-35-2 10 mg 28.00 22.40
Reversible inhibitor of mouse inducible and rat neuronal nitric oxide synthase (iNOS/NOS II; nNOS/NOS I). Also useful for affinity purification of avidin on immobilized solid supports.
M1025   4-Hydrazino-7-nitrobenzofurazane 90421-78-6 25 mg 50.93 40.74
Fluorescent derivatization reagent useful for aliphatic aldehyde detection including reducing carbohydrates.
M1036   Fluorescein-5-thiosemicarbazide 76863-28-0 50 mg 69.50 55.60
Cell impermeant fluorescent probe useful for determining protein and peptide topology on the cell surface.
M0955   MarkerGene™ FITC Antibody Labeling Kit 1 kit 174.00 139.20
Provides reagents and methods to simply and quickly label antibodies or other proteins with the brilliant green dye fluorescein.
M1093   Ethidium homodimer (EthD-1) 61926-22-5 1 mg 126.80 101.44
High affinity fluorescent nucleic stain. It binds to both DNA and RNA in a sequence-independent manner and with a >30-fold fluorescence enhancement.
M1282   Ethidium bromide 1239-45-8 100 mg 38.60 30.88
Commonly used nucleic acid stain.
M1202   Eosin-5-thiouredylphenylboronic acid, triethylammonium salt N/A 25 mg 79.75 63.80
Long-wavelength fluorescent labeling agent for cis-diols (sugars) at high pH values on cell surfaces and in vitro for carbohydrate determination in glycoproteins and for HPLC analysis of sugars.
M1074   Eosin 5-isothiocyanate (EITC) 60520-47-0 25 mg 46.30 37.04
Can be used as a reversible inhibitor of the erythrocyte calcium pump as well as an effective phosphorescent probe in protein rotational studies.
M1331   3,3'-Dipropylthiacarbocyanine iodide 53336-12-2 250 mg 39.90 31.92
Membrane potential sensitive dye for monitoring changes in the cellular and mitochondrial membrane potential in vivo.
M1269   1,1'-Dioctadecyl-3,3,3',3'-tetramethylindodicarbocyanine perchlorate 127274-91-3 10 mg 50.90 40.72
Red fluorescent membrane probe for long term staining of live cells. Also used in fiber optic sensors for detecting K+ using fluorescence energy transfer.
M1197   3,3-Dioctadecyloxacarbocyanine perchlorate (DiO; DiOC18(3)) 34215-57-1 25 mg 47.74 38.19
Highly fluorescent membrane probe for labeling live and fixed cells in culture.
M1051   4-[4-(Dimethylamino)phenylazo]benzoic acid, N-succinimidyl ester (DABCYL-SE) 146998-31-4 25 mg 31.79 25.43
Long wavelength azo quencher is a useful reagent (similar to MANCYL-SE) for labeling proteins or peptides through their amino-groups. The succinimidyl ester is reactive with terminal amines or lysines of peptides and other nucleophiles for labeling studies of proteins.
M1053   7-(Diethylamino)coumarin-3-carboxylic acid, N-succinimidyl ester 139346-57-9 25 mg 76.45 61.16
Amine reactive fluorescent probe useful for labeling amino acids prior to resolution by capillary zone electrophoresis and for multicolor DNA and protein labeling experiments.
M0530   N-(di-Methyl amino naphthyl)-N-(para carboxy phenyl) hydrazide N/A 2 mg 152.79 122.23
Long wavelength azo dye is a useful reagent (similar to DABCYL-succinimidyl ester) for labeling proteins or peptides through their amino groups.
M0532   N-(di-Methyl amino naphthyl)-N-(para carboxy phenyl) hydrazide, NHS ester N/A 1 mg 152.79 122.23
Longer wavelength azo dye quencher is a useful reagent (similar to DABCYL-succinimidyl ester) for labeling proteins or peptides through their amino groups.
M0329   3-Dansylaminophenylboronic acid 75806-94-9 50 mg 36.13 28.90
Fluorescent labeling agent for cis-diols (sugars) at high pH values on cell surfaces and in vitro for carbohydrate determination in glycoproteins and for HPLC analysis of sugars.
M1127   Dansyl-β-lactoglobulin-A N/A 1 mg 38.83 31.06
IEF-Marker for HPCE and for IEF-gels. Fluorescent IEF Marker pI 5.1 with EX 330nm and EM 415 nm in 0.1 M citrate buffer pH 5.1.
M1385   Dansyl hydrazine 33008-06-9 100 mg 51.00 40.80
For use in HPLC labeling.
M1383   Dansyl chloride 605-65-2 1 g 39.50 31.60
Widely used in protein sequencing and amino acid analysis.
M0966   5(6)-Carboxytetramethylrhodamine N-succinimidyl ester 246256-50-8
M0962   5(6)-Carboxytetramethylrhodamine (TAMRA) 98181-63-6 100 mg 134.00 107.20
Common DNA labeling reagent, also used for protein labeling.
M1259   5(6)-Carboxynaphthofluorescein, N-succinimidyl ester 150347-58-3 10 mg 34.43 27.54
Reactive long wavelength fluorophore for use in labeling proteins and other compounds. Reactive with terminal and internal (Lys) groups, at pH 8-9. The fluorescence properties are pH dependent.
M0979   5(6)-Carboxyfluorescein-hexanoic acid, NHS ester 114616-31-8 5 mg 72.38 57.90
Useful fluorescent amine-reactive probe has an added spacer to improve accessibility of the reactive group by nucelophiles in preparation of bioconjugates.
M0984   5(6)-Carboxyfluorescein, NHS ester 117548-22-8 25 mg 28.90 23.12
Useful fluorescent amine-reactive probe for synthesis of bioconjugates, yielding hydrolysis resistant derivatives which show excellent performance and stability at physiological pH values.
M0013   5(6)-Carboxyfluorescein diacetate, NHS ester 150347-59-4 25 mg 115.75 92.60
Labeling reagent (amine-reactive) with green emission spectral properties (Abs 488 nm / EM 517 nm) after intracellular removal of acetate esters.
M0783   Biotin-X, SE 72040-63-2 50 mg 52.10 41.68
Reactive biotin derivative containing an aminohexanoyl spacer group (termed "X") between biotin and the binding site for proteins, nucleic acids, or other biological molecules. This spacer helps to reduce potential quenching effects of fluorophores attached to the analyte molecule, since biotin binds to "deep" binding sites in avidin or streptavidin.
M1138   MarkerGene™ Biotin-X Antibody/Protein Labeling Kit 1 kit 222.00 177.60
For efficient biotinylation of antibodies and other proteins. The long spacer between the biotin and the reactive group in biotin-X succinimidyl ester enhances the ability of the conjugated biotin to interact with avidin and streptavidin.
M0785   Biotin succinimidyl ester 35013-72-0 100 mg 57.90 46.32
Activated biotin derivative which can be readily coupled to primary or secondary amines of analyte compounds or proteins under mild conditions.
M1356   MarkerGene™ Biotin Detection and Quantitation Kit 1 kit 115.00 92.00
Allows the measurement of the molar ratio of biotin to protein in biotin-protein conjugates, biotin-DNA molar ratios in biotinylated DNA samples, or quantitation of biotin concentrations in solution. The kit can be used to determine biotin concentrations down to 1 uM concentrations. The assay can be performed in a microtiterplate format.
M0128   Biocytin hydrazide hydrochloride 102743-85-1 10 mg 50.93 40.74
Water-soluble, long-chained, biotin-containing hydrazide, used for the selective detection of glycoconjugates.
M1257   Berberine sulfate 633-66-9 25 mg 62.10 49.68
Useful as a fluorescent stain for heparin in several cell lines.
M0384   8-Azidoadenosine 5'-triphosphate, TEA salt N/A 10 mg 152.79 122.23
Useful in photoaffinity labelling of ATP binding proteins. Covalent labeling after exposure to UV light (e.g. UVS-11 or UVG-11 lamp). Not radiolabeled.
M1124   Avidin sulforhodamine 101 conjugate (Texas Red™ equivalent) N/A 5 mg 136.07 108.86
This red fluorescent protein excites at 595 nm with an emission maximum at 615 nm. Since the excitation and emission maxima are well separated from those of fluorescein, this highly fluorescent conjugate can be employed with other fluorescein or coumarin conjugates to simultaneously localize two or three antigens in the same tissue section.
M1274   Avidin fluorescein isothiocyanate (FITC) conjugate N/A 5 mg 96.45 77.16
This green fluorescent protein excites at 494 nm with an emission maximum at 518 nm. Since the excitation and emission maxima are well separated from those of other fluorophores such as Texas RedTM and coumarin, FITC Avidin can be employed with other conjugates to simultaneously localize two or three antigens in the same tissue section.

©2010 Marker Gene Technologies, Inc. Published by Marker Gene Technologies, Inc., The University of Oregon Riverfront Research Park, 1850 Millrace Drive, Eugene, Oregon 97403-1992 USA. All rights reserved. For information on the use or copying of the material contained in this document, please contact us at techservice@markergene.com.