24 Results for "

pH-insensitive

" in MedChemExpress (MCE) Product Catalog:
Products (24)

24 Results for "pH-insensitive" in MCE Product Catalog:

Cat. No.: HY-D3266
IR 650 DBCO is a far-red-fluorescent probe, pH-insensitive, azide-reactive probe routinely used for imaging of azide-containing biomolecules without the need for a copper catalyst. (Ex=651nm, Em=668 nm)
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Cat. No.: HY-W800770
CAS No.: 2563610-26-2
Target:  

Fluorescent Dye

Research Areas:  

Others

MB 543 DBCO is a fluroescent agent with a terminal DBCO group. The DBCO group is commonly used for copper-free Click Chemistry reactions due to its strain promoted high energy. MB 543 Alkyne is a very hydrophilic, water-soluble, orange fluorescent dye that has a maximal absorption of 543 nm and emission at 566 nm. The compound is also pH insensitive from pH 3 to pH 10.
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Cat. No.: HY-172728
CAS No.: 2702251-82-7
Target:  

Fluorescent Dye

Research Areas:  

Others

Difluorocarboxyfluorescein NHS Ester, 6-isomer is an amine-reactive fluorinated analog of fluorescein that overcomes some of the key limitations of fluorescein, including greater photostability and a lower pKa (pKa ~ 4.7 versus 6.4 for fluorescein), making its fluorescence essentially pH insensitive in the physiological pH range. Although the mixed isomers of Difluorocarboxyfluorescein NHS Ester, is a preferred, routinely used fluorescent dye for labeling proteins, peptides and nucleotides, purification of peptide and nucleotides labeled with 5(6) isomers might be troublesome due to significant signal broadening in HPLC purification. Peptides and nucleotides labeled with a single isomer usually give better resolution in HPLC purification that is often required in the conjugation processes.
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Cat. No.: HY-D2763
CAS No.: 890928-51-5
BP Fluor 532 maleimide is a photostable, bright yellow-fluorescent dye with pH insensitive emission from pH 4 to pH 10. The excitation of BP Fluor 532 is ideally suited for the frequency-doubled Nd:YAG laser line. BP Fluor 532 dye can be conjugated to a variety of antibodies, peptides, proteins, tracers, and amplification substrates, and is often used for the generation of stable signals in imaging and flow cytometry. Maleimide is the most popular sulfhydryl-reactive group for conjugating the dye to a thiol group on a protein, oligonucleotide thiophosphate, or low molecular weight ligand. The maleimide group specifically and efficiently reacts with reduced thiols (sulfhydryl groups, –SH) at pH 6.5 to 7.5 to form a stable thioether bond. The resulting conjugates exhibit brighter fluorescence and greater photostability than the conjugates of many other spectrally similar fluorophores.
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