CY7 (Sulfo-Cyanine7) is a fluorescence labeling agent (Ex=750 nm, Em=773 nm). Cy7 is used for labeling oligonucleotides, antibodies, peptides, and proteins.

Indocyanine green (Cardiogreen) is a low toxicic fluorescent agent, is a tricarbocyanine dye,has been widely used in medical diagnostics, such as determining cardiac output, hepatic function, and liver blood flow, and for ophthalmic angiography.

CY7-SE Triethylamine is a fluorescence labeling agent (Ex=700-770 nm,Em=790 nm) used for labeling proteins, peptides, antibodies, and oligonucleotides.

IR-820 (New Indocyanine Green) is a near-infrared dye with improved stability, good color rendering, and excellent fluorescence penetration. It serves as an infrared blood pool contrast agent for detecting and quantifying diseased tissue in live animals, with maximal excitation (Ex) and emission (Em) of 710 and 820 nm, respectively.

Rhodamine 800 is a near-infrared fluorescent dye.

IR-780 Iodide (IR 780 iodide), a near‐infrared fluorescent dye, is used for the exclusive characterization of human CSCs through the HIF‐1α/glycolysis dependent mitochondrial transporter ABCB10's activity.

IR 783 is a heptamethine cyanine fluorescent probe for in vivo imaging of tumor cells. It displays excitation/emission maxima of 776/798 nm, respectively.

Cy7.5 (Cyanine 7.5) is an anthocyanin fluorescent dye that emits near infrared (NIR) fluorescence. Cy7.5 is commonly used for fluorescent protein immunoblotting and live animal imaging.

FD-1080 is a fluorophore that exhibits both excitation and emission in the NIR-II region, making it suitable for in vivo imaging.

Cyanine7 NHS ester is a fluorescent probe widely utilized in biomarking and bioimaging applications. It has excitation/emission wavelengths (Ex/Em) of 740/770 nm.

ICG-amine is a tricarbocyanine near-infrared fluorescent probe that binds efficiently to amino acid residues without requiring condensing agents.

CY7-SE is a CY7-derived dye with excitation/emission wavelengths of 750/775 nm. CY7 (Sulfo-Cyanine7) is an amine-reactive near-infrared (NIR) fluorophore with excitation/emission wavelengths of 745/800 nm, suitable for in vivo imaging, flow cytometry, antibody labelling, and nucleic acid detection, among other applications.

Pafolacianine (OTL 38) is a near-infrared dye-based fluorescent marker used to identify ovarian cancer lesions during surgeries.

Fluorescent polyamine probe-1 (compound 15) is a linear polyamine probe characterized by its high uptake efficiency. It is employed in studying the transport systems into cancer cells [1].

ICG-carboxylic acid is a near-infrared (NIR) fluorocein dye and ICG derivative. ICG (Indocyanine Green) is a fluorescent dye for medical diagnostics with Ex/Em = 790/815 nm, applicable for blood flow measurement and angiography. ICG may also be conjugated to targeted antibodies for tumour cell ablation, such as PANC-1 and BxPC-3.

Fluorescent NIR 885 is a dye molecule that can be used in life science related research. The CAS number of Fluorescent NIR 885 is 177194-56-8.

ICG-OSu, also known as ICG NHS ester, is a near-infrared fluorescent dye with amine-reactive functionality that enables efficient covalent conjugation to biomolecules, ICG-OSu is widely utilized for the development of in vivo imaging probes, supporting applications in optical imaging, biodistribution studies, and real-time visualization of biological processes.

Cyanine7 amine is effective for labeling biomolecules such as proteins, nucleic acids, and cells, facilitating localization, tracking, and detection in various bioanalytical techniques. It provides fluorescent signals for visualization. The excitation/emission wavelengths (Ex/Em) are 750/773 nm.

DTTCI (3,3′-Diethylthiatricarbocyanine iodide), an infrared photographic sensitizing dye, serves as a highly sensitive chiroptical reporter for DNA helicity and sequence [1] [2].

Janelia Fluor 669, SE (JF669, SE), a red fluorescent dye, reacts directly with thiol-containing HaloTag ligand under mild conditions (DIEA, DMF) to produce a JF669 HaloTag ligand in a single step (Ex = 669 nm; Em = 682 nm).

Cypate is a near-infrared fluorescent dye that belongs to the family of photosensitizers. It is characterized by high photostability and optical properties, making it a common choice for near-infrared optical imaging, optical development, tumor labeling, and drug delivery applications. Moreover, Cypate serves as a molecular probe and binds with targeting molecules (such as CBT or small interfering RNA) to enable efficient detection and imaging of specific cells or tissues.

CY7-SE triethylamine is a type of CY dye. CY stands for cyanine, which is a compound formed by two nitrogen atoms linked by an odd number of methine units. Cyanine compounds are known for their long wavelengths, adjustable absorption and emission, high extinction coefficients, good water solubility, and relatively simple synthesis. CY series dyes are commonly used for labeling proteins, antibodies, and small molecule compounds. For protein and antibody labeling, they can be conjugated through straightforward mixing reactions. Below, we detail a method for labeling proteins and antibodies, which can serve as a useful reference.