GRADE & PURITY ≥95%

Synonyms

Sulfo-CY-5.5 NHS ester | (Sulfo-Cyanine5.5 NHS ester) tripotassium

Storage

Protected from light,Store at -20°C,Argon charged,Desiccated

Shipped In

Ice chest + Ice pads

Overview

Spectral properties

Excitation/absorption maximum, nm: 675

ε, L⋅mol−1⋅cm−1: 211000

Emission maximum, nm: 694

Fluorescence quantum yield: 0.21

CF260: 0.09

CF280: 0.11

The dye is well-suitable for non-invasive in vivo NIR imaging and applications requiring low fluorescent background.

sulfo-Cyanine5.5 NHS ester is an amine-reactive activated ester of sulfonated far-red Cyanine5.5 fluorophore, an analog of Cy5.5. This is a reagent of choice for the labeling of antibodies, sensitive proteins, and others which require reactions in a purely aqueous environment or without any significant additions of organic co-solvents.

Application：

The dye is well-suitable for non-invasive in vivo NIR imaging and applications requiring low fluorescent background.

Specifications

Synonyms

Sulfo-CY-5.5 NHS ester | (Sulfo-Cyanine5.5 NHS ester) tripotassium

Specifications & Purity

≥95%

Biochemical and Physiological Mechanisms

Amine reactive activated ester of sulfonated far red Cyanine5.5 fluorophore. Suitable for for the labeling of antibodies and sensitive proteins which require reactions in purely aqueous environment, or without any significant additions of organic co-solve

Storage

Protected from light, Store at -20°C, Argon charged, Desiccated

Shipped In

Ice chest + Ice pads

This product requires cold chain shipping. Ground and other economy services are not available.

Purity

≥95%

Names and Identifiers

• Molecular Weight: 1114.37

Chemical and Physical Properties

• Solubility: good in water, DMF, DMSO
• Sensitivity: Moisture sensitive；Light sensitive

References

1. Yu Wei, Luo Huilong, Han Bo, Lin Sisi, Li Qian, Xue Rui, Tang Hui, Jia Xin, Wang Lu, Liu Jinyao.  (2025)  Restoring mucosal barrier homeostasis by in situ formation of a living-synthetic therapeutic coating.  Nature Communications,  16  (1): (1-17).  [PMID:40825983] [10.1038/s41467-025-63110-0]

2. Pan-Miao Liu, Yu-Ge Wang, Ting-Ting Zhu, Ji-Chun Zhang, Han-Wen Gu, Hui-Juan Li, Wei-Tong Pan, Yan-Bo Zhou, Kui-Cheng Zhu, Kenji Hashimoto, Jian-Jun Yang.  (2026)  Polydopamine nanoparticles restore cognition via targeted dopamine delivery and septo-hippocampal cholinergic activation.  Theranostics,  16  (7): (3616).  [PMID:41608587] [10.7150/thno.121735]