胺類活性染料,近紅外熒光染料,Cy7®的改進的類似物。
近紅外熒光素可以被用來利用生物組織的近紅外窗口。在這個光譜區域,高度增強的組織透明度使得活體成像成為可能。該染料可用于制備CY7標記的生物分子來進行后續試驗,如活體研究及藥物開發相關實驗。
Cy7的特殊結構加固了中心聚亞甲基(polymethyne)鏈的穩定性。這種增強的分子結構會使其量子產率較其母結構提供20%,因此它的熒光強度會更大。 該試劑在標記時需要共溶劑有機溶劑。水溶Cy7 NHS ester可以用于蛋白NIR標記。
推薦手冊
氨基分子的NHS酯標記
Cy® is a trademark of GE Healthcare.
General properties
Appearance:
green powder
Molecular weight:
682.29
Molecular formula:
C41H48ClN3O4
Solubility:
soluble in organic solvents (DMSO, DMF, dichloromethane), low solubility in water
Quality control:
NMR 1H (95%) and 13C, TLC, functional testing
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.
MSDS:
Download
Spectral properties
Excitation maximum, nm:
750
Extinction coefficient at excitation maximum, Lmol-1cm-1:
199000
Emission maximum, nm:
773
Fluorescence quantum yield:
0.3
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