Protein Labeling Reagents
Biotium MemBrite™ Fix 640/660 Cell Surface Staining Kit, 100 Reactions
MemBrite™ Fix Cell Surface Staining Kits are designed for covalently staining the surface of live cells to conveniently visualize cell boundaries in immunofluorescence experiments. MemBrite™ Fix are new covalent cell surface stains that react irreversibly with cell surface proteins for staining that can withstand formaldehyde or alcohol fixation, and detergent permeabilization. Unlike lectins such as WGA, which bind specific targets that may vary between cell types, MemBrite™ Fix dyes react widely with cell surface proteins. MemBrite™ Fix staining is rapid and non-toxic to cells, and because MemBrite™ Fix dyes are highly water soluble, they stain cells much more evenly than traditional lipophilic membrane dyes like DiO, DiI, PKH, Vybrant, or CellMask™. This trial size kit has reagents sufficient for 100 labeling reactions. The kit contains 1 vial of MemBrite™ Fix 640/660 that is sufficient for 20 uL of 1000X dye after DMSO reconstitution.
Biotium 5-(And-6)-Carboxyfluorescein
5-(and-6)-FAM (full name: 5-(and-6)-Carboxyfluorescein mixed isomer) has a pKa of 6.5 and can be used as a pH indicator. Its excitation spectrum and fluorescence response to pH are similar to those of BCECF. Carboxyfluorescein can also be used as a tracer dye. The dye is membrane-impermeant and can be loaded into cells by microinjection or scrape loading. Properties: Ex/Em (pH 9) = 492/514 nm; e (pH 9) = 82,000; Yellow orange solid soluble in pH>6 water; Store at 4°C and protect from light, especially in solution; C21H12O7; MW: 376; [72088-94-9].
Medchemexpress LLC HY-114245 10mg Medchemexpress, Se-Methylselenocysteine CAS:26046-90-2 Purity:>98%
Medchemexpress, HY-114245 10mg Se-Methylselenocysteine CAS:26046-90-2 Se-Methylselenocysteine, a precursor of Methylselenol, has potent cancer chemopreventive activity and anti-oxidant activity. Se-Methylselenocysteine is orally bioavailable, and induces apoptosis. Purity:>98% Medchemexpress has over 10000 novel life-science reagents, reference compounds, APIs and natural compounds for laboratory and scientific use. Other quantity can also be offered.
Biotium CF640R Protein Labeling Kit , 3x(1mg) labelings
This kit contains everything you need to label antibodies or other proteins with a fluorescent CF dye succinimidyl ester (CF dye SE). Each kit contains reagents for three labeling reactions of up to 1 mg protein per reaction. CF dyes are Biotium's line of next-generation fluorescent dyes with advantages in brightness, photostability, and conjugate specificity compared to other fluorescent dyes. Far-red fluorescent CF640R dye has excitation/emission at 642/662 nm.
Biotium Mix-n-Stain™ CF540 Small Ligand Labeling Kit
Mix-n-Stain™ Small Ligand Labeling Kits are designed for rapid labeling of low molecular weight (MW 150 -5000) ligands without a purification step. Suitable ligands or substrates include SNAP-tag, CLIP-tag™ and HaloTag ligand derivatives that have an aliphatic amine. CF dyes are Biotium's line of next-generation fluorescent dyes with advantages in brightness, photostability, and conjugate specificity compared to other fluorescent dyes. Orange fluorescent CF540 has excitation/emission at 540/570 nm. It is suitable for labeling ligands for intracellular staining.
Revvity Health Sciences Inc IVISense 680 MAL Fluorescent Dye (5 mg) (VivoTag)
IVISense 680 MAL Fluorescent Dye (5 mg) (VivoTag)
Revvity Health Sciences Inc HTRF Anti-Europium NHS Labeling Reagent, 1 mg
HTRF Anti-Europium NHS Labeling Reagent, 1 mg
Apexbio Technology LLC D-Desthiobiotin 533-48-2 100mg
D-Desthiobiotin (CAS 533-48-2) is a derivative of biotin lacking the thiophene ring It binds to avidin and streptavidin with lower affinity compared to biotin enabling reversible interaction in affinity purification and protein chromatography protocols This property facilitates gentle elution of biotinylated proteins or other biomolecules without harsh conditions D-Desthiobiotin is widely employed for the labeling detection and isolation of proteins and cells in biochemical and cell-based assays providing an efficient tool for applications requiring temporary and specific capture of biomolecular targets
![eMolecules Broadpharm / BP Fluor 555 Maleimide / 1mg / 599128651 / BP-25563 / / / [null] / 955.090 / C40H50N4O15S4](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502470418.jpg-250.jpg)
eMolecules Broadpharm / BP Fluor 555 Maleimide / 1mg / 599128651 / BP-25563 / / / [null] / 955.090 / C40H50N4O15S4
Broadpharm / BP Fluor 555 Maleimide / 1mg / 599128651 / BP-25563 / / / [null] / 955.090 / C40H50N4O15S4
Aat Bioquest HIS Lite™ Cy3 Bis NTA-Ni Complex
Polyhistidine is one of the most popular affinity tags incorporated into recombinant proteins. It can be inserted either at the N- or C-terminus, and expressed in a variety of hosts.
![eMolecules Broadpharm / BP Fluor 430 DBCO / 1mg / 599128605 / BP-25547 / / 2644752-85-0 / [null] / 761.810 / C40H38F3N3O7S](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502471442.JPG-250.jpg)
eMolecules Broadpharm / BP Fluor 430 DBCO / 1mg / 599128605 / BP-25547 / / 2644752-85-0 / [null] / 761.810 / C40H38F3N3O7S
Broadpharm / BP Fluor 430 DBCO / 1mg / 599128605 / BP-25547 / / 2644752-85-0 / [null] / 761.810 / C40H38F3N3O7S
Aat Bioquest Sulforhodamine 101 sulfonyl chloride [Texas Red®] *CAS 82354-19-6*
Sulforhodamine 101 acid chloride (also called Texas Red®) is the most popular labeling reagent of sulfonyl chloride. It is quite unstable in water, especially at the higher pH required for reaction with aliphatic amines.
![Aat Bioquest Cyanine 5 monosuccinimidyl ester [equivalent to Cy5® NHS ester]](https://assets.fishersci.com/TFS-Assets/CCG/product-images/501952763.JPG-250.jpg)
Aat Bioquest Cyanine 5 monosuccinimidyl ester [equivalent to Cy5® NHS ester]
A variety of cyanine 5 ( Cy5®) dyes has been used to label biological molecules for fluorescence imaging and other fluorescence-based biochemical analysis. They are widely used for labeling peptides, proteins and oligos etc.