Sulfo-Cyanine5.5 NHS ester

Cat. # Quantity Price Lead time
17320 1 mg $110.00 in stock
27320 5 mg $290.00 in stock
47320 25 mg $690.00 in stock
57320 50 mg $1190.00 5 days
67320 100 mg $1850.00 in stock

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 purely aqueous environment, or without any significant additions of organic co-solvents.

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

Absorption and emission spectra of sulfo-Cyanine5.5 fluorophore

Absorption and emission spectra of sulfo-Cyanine5.5 fluorophore

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General properties

Appearance: dark blue solid
Mass spec M+ increment: 884.15
Molecular weight: 1114.37
CAS number: 2419286-92-1
Molecular formula: C44H42N3K3O16S4
Solubility: good in water, DMF, DMSO
Quality control: NMR 1H, HPLC-MS (95%)
Storage conditions: Storage: 12 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
Product specifications

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

Product citations

  1. Liu, Q.; Tian, J.; Liu, J.; Zhu, M.; Gao, Z.; Hu, X.; Midgley, A.C.; Wu, J.; Wang, Xi.; Kong, D.; Zhuang, J.; Liu, J.; Yan, X.; Huang, X. Modular Assembly of Tumor-Penetrating and Oligomeric Nanozyme Based on Intrinsically Self-Assembling Protein Nanocages. Advanced Materials, 2021, 33(39), 2103128. doi: 10.1002/adma.202103128
  2. Lu, Z.; Zhang, Y.; Wang, Y.; Tan, G.-H.; Huang, F.-Y.; Cao, R.; He, N.; Zhang, L. A biotin-avidin-system-based virus-mimicking nanovaccine for tumor immunotherapy. Journal of Controlled Release, 2021, 332, 245–259. doi: 10.1016/j.jconrel.2021.02.029
  3. Shramova, E.; Proshkina, G.; Shipunova, V.; Ryabova, A.; Kamyshinsky, R.; Konevega, A.; Schulga, A.; Konovalova, E.; Telegin, G.; Deyev, S. Dual Targeting of Cancer Cells with DARPin-Based Toxins for Overcoming Tumor Escape. Cancers, 2020, 12(10), 3014. doi: 10.3390/cancers12103014
  4. Peplau, E.; De Rose, F.; Reder, S.; Mittelhaeuser, M.; Scafetta, G.; Schwaiger, M.; Weber, W.A.; Bartolazzi, A.; Skerra, A.; D'Alessandria, C. Development of a chimeric Fab directed against human galectin-3 and validation as an immune-PET tracer for the sensitive in vivo imaging of thyroid cancer. Thyroid, 2020, 30(9), 1314–1326. doi: 10.1089/thy.2019.0670
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