CY5.5 NHS ester manufacturers
- CY5.5 NHS ESTER
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2026-09-17
- CAS:910482-46-1
- Min. Order: 1kg
- Purity: ＞ 95%
- Supply Ability: 100kg/M
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| | CY5.5 NHS ester Basic information |
| Product Name: | CY5.5 NHS ester | | Synonyms: | Sulfo-Cy5.5 NHS ester Potassium;1H-Benz[e]indolium, 2-[5-[3-[6-[(2,5-dioxo-1-pyrrolidinyl)oxy]-6-oxohexyl]-1,3-dihydro-1,1-dimethyl-6,8-disulfo-2H-benz[e]indol-2-ylidene]-1,3-pentadien-1-yl]-3-ethyl-1,1-dimethyl-6,8-disulfo-, inner salt, potassium salt (1:3);Sulfo-Cy5.5 NHS;CY5.5 NHS ester | | CAS: | 910482-46-1 | | MF: | C45H48KN3O16S4 | | MW: | 1054.22 | | EINECS: | | | Product Categories: | | | Mol File: | 910482-46-1.mol |  |
| | CY5.5 NHS ester Chemical Properties |
| solubility | Easily soluble in organic solvents such as DMSO and DMF, very soluble in water | | Appearance | Dark blue solid | | ex/em | 678/706 nm (PBS buffer) | | ε(extinction coefficient) | 211000 L⋅mol−1⋅cm−1 | | Φ(quantum yield) | 0.21 |
| | CY5.5 NHS ester Usage And Synthesis |
| Description | Cy5.5 NHS Ester (also sold under sulfo-Cyanine5.5 NHS Ester name) is a bright and photostable near-IR dye that is spectrally similar to Alexa Fluor® 680, DyLight® 680, and IRDye® 680 dye. Cy5.5 NHS Ester is completely water-soluble and often a reagent of choice for labeling antibodies, peptides, and proteins that are sensitive toward organic co-solvents. Cy5.5 conjugates are pH insensitive from pH 4 to pH 10 and produce minimal autofluorescence of biological specimens in this region of the spectrum. Fluorescence of this long-wavelength Cyanine dye is not visible to the human eye but is readily detected by most imaging systems.The NHS ester (succinimidyl ester) of Cy5.5 is the most popular tool for conjugating this dye to a protein or antibody. NHS esters can be used to label to the primary amines (R-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. | | Chemical Properties | Appearance: Dark blue solid
ex/em: 678/706 nm (PBS buffer)
Extinction coefficient (ε): 211000 Lmol1cm1
Quantum yield (Φ): 0.21 | | Chemical Reactivity | Primary amine | | Abs/Em Maxima | 675/694 nm | | Extinction Coefficient | 190,000 cm-1M-1 | | Spectrally Similar Dyes | Alexa Fluor® 680, DyLight® 680, IRDye® 680 |
| | CY5.5 NHS ester Preparation Products And Raw materials |
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