≥95% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Protected from light,Store at -20°C,Argon charged,Desiccated Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
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.
| Molecular Weight | 1114.37 |
|---|
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
 G2310908 | Certificate of Analysis | Oct 13, 2025 | S276331 |
| G2310916 | Certificate of Analysis | Oct 13, 2025 | S276331 |
| J2513691 | Certificate of Analysis | Sep 29, 2025 | S276331 |
| J2513692 | Certificate of Analysis | Sep 29, 2025 | S276331 |
| J2513697 | Certificate of Analysis | Sep 29, 2025 | S276331 |
| L2412505 | Certificate of Analysis | Sep 17, 2025 | S276331 |
| L2412558 | Certificate of Analysis | Sep 17, 2025 | S276331 |
| L2412559 | Certificate of Analysis | Sep 17, 2025 | S276331 |
| K2401047 | Certificate of Analysis | Aug 11, 2025 | S276331 |
| L2410558 | Certificate of Analysis | Dec 03, 2024 | S276331 |
| H2416201 | Certificate of Analysis | Aug 09, 2024 | S276331 |
| H2416202 | Certificate of Analysis | Aug 09, 2024 | S276331 |
| H2416203 | Certificate of Analysis | Aug 09, 2024 | S276331 |
| G2310907 | Certificate of Analysis | Apr 07, 2024 | S276331 |
| G2310912 | Certificate of Analysis | Apr 07, 2024 | S276331 |
| G2310935 | Certificate of Analysis | Apr 07, 2024 | S276331 |
| Solubility | good in water, DMF, DMSO |
|---|---|
| Sensitivity | Moisture sensitive；Light sensitive |
| 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] |
