AV一区二区AV,亚洲AV5

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產(chǎn)品簡介

Cyanine5.5 hydrazide,酰肼紅色熒光染料
目前Cyanine系列染料以兩種異構(gòu)體的形式存在，一種是非磺化花青素（non-sulfonated cyanines），一種是磺化花青素（sulfonatedcyanine）。兩者的光譜性質(zhì)幾乎*，因此大部分應(yīng)用可相互替換。

詳細(xì)介紹

Cyanine5.5 hydrazide,酰肼紅色熒光染料

產(chǎn)品介紹

Cyanine5.5 hydrazide

Cyanine5.5 hydrazide is a carbonyl-reactive near infrared dye. Hydrazides uickly react with carbonyl pounds, such as aldehydes and ketones, and form stable hydrazones. This reaction is useful for the preparation of labeled conjugates.

Carbonyl groups in biomolecules can form spontaneously after oxidative stress or deamination of proteins. Alternatively, aldehyde groups can be specifically generated by periodate oxidation of sugar residues of glycoproteins, for example antibodies. Antibodies can be oxidized by sodium periodate and labeled with Cyanine5.5 hydrazide to form Cyanine5.5 labeled antibodies. Since sugar residues in antibodies are located far from variable, epitope-binding site, this method is particularly good for the labeling of antibodies.

Cyanine5.5 is a near infrared fluorophore, an analog of Cy5.5®. It is particularly suitable for the applications which reuire low fluorescence background. The absorption and emission wavelength of the dye exhibit significant tissue penetration, so Cyanine5.5 is suitable for in vivo NIR imaging applications.

General properties

Appearance:	dark blue powder
Molecular weight:	669.73
Molecular formula:	C₄₀H₄₆Cl₂N₄O
Solubility:	moderate solubility in water, good in polar organic solvents (DMF, DMSO, alcohols)
*uality conrol:**	NMR ¹H, HPLC-MS (95%)
Storage conditions:	Storage: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.

Spectral properties

Excitation maximum, nm:	684
ε, L⋅mol⁻¹⋅cm⁻¹:	209000
Emission maximum, nm:	710
Fluorescence uantum yield:	0.2
CF₂₆₀:	0.07
CF₂₈₀:	0.03