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5(6)-Carboxyfluorescein (5-(and-6)-Carboxyfluorescein mixed isomers) contains a carboxylic acid that can be used to react with primary amines via carbodiimide activation of the carboxylic acid.

Cibacron Blue 3G-A, an anthraquinone dye, inhibits R46β-lactamase (Ki: 1.2 uM).

BODIPY-labeled vitamin B12 is vitamin B12 conjugated with BODIPY fluorescent dye, which can be used to study the cellular metabolism and transport of vitamin B12 in live cells, with λex = 493 nm and λem = 508 nm.

Substance P, FAM-labeled (TFA), is marked with a FAM fluorescent group. Substance P TFA (Neurokinin P TFA) functions as a neuropeptide acting as both a neurotransmitter and neuromodulator within the central nervous system. The endogenous receptor for Substance P is the neurokinin 1 receptor (neurokinin 1 receptor, NK1R).

RAD21 (356–395), biotin labeled, is a biotin-tagged peptide comprising amino acids 356 to 395 of the RAD21 protein. It is employed in the investigation of the interaction mechanism between STAG1 and RAD21. The equilibrium dissociation constant (KD) for the interaction between RAD21 (356–395) and STAG1 is 127 nM.

Glucagon (1-29), FAM-labeled, is a biologically active peptide.

Substance P, FAM-labeled, is a biologically active peptide.

(Arg)9,TAMRA-labeled is a TAMRA-tagged cell-permeable peptide. (Arg)9 serves as a cell-penetrating peptide used for drug delivery.

A4 glycan, 2-AB labelled (A4 N-linked oligosaccharide, 2-AB labelled) is a polymeric N-glycoprotein serving as a versatile fluorescent linker. The resulting conjugate mimics the antennary structures of N-glycans, offering high sensitivity and specificity.

A3 glycan, procainamide labelled (A3 N-linked oligosaccharide, procainamide labelled), is a polymeric N-glycoprotein functioning as a versatile fluorescent linker. The resulting conjugate exhibits high sensitivity and specificity by mimicking the antennae elements of N-glycans.

Antennapedia Peptide FAM-labeled, a fluorophore-tagged peptide, functions as a molecular probe in cancer research [1].

CY5-SE (Cy5 NHS Ester) is a reactive dye used to label amino groups in peptides, proteins and nucleotides. It needs to be stored away from light. Excitation wavelength (nm): 640, emission wavelength (nm): 664.

BODIPY 493/503 (Pyrromethene 546) is a lipophilic fluorescent probe with Ex/Em of 493/503 nm. BODIPY 493/503 localizes to polar lipids and can be used to label cellular neutral lipid contents and for live and fixed cell applications.

4-Di-1-ASP is a positively charged fluorescent dye used to label glioma cells in live brain tissue and can also be used to observe mitochondria in live cells, with λex/λem = 475/606 nm.

5-IAF is a fluorescein derivative of indoleacetamide, a fluorescent probe that can be used to label proteins and others containing free thiols (cysteine side chains). 5-IAF can label the catalytic (alpha) subunit of dog kidney Na,K-ATPase.

Amine-PEG3-Biotin can be used as a signal amplification label.

Cy5 (Sulfo-Cyanine5) is a phalloidin dye used to label amino groups in peptides, proteins and oligonucleotides.

Sulfo-Cy3 diacid NHS ester is a CY3-derived dye. Cy3 (Sulfo-Cyanine3) is an amine-reactive cyanine orange dye with Ex/Em=550/570 nm, commonly used for fluorescent labelling of proteins and nucleic acids.

Dansyl amide is a fluorescent dye used in biochemistry and chemistry to label substances with the fluorescent dansyl group.

FITC is a green fluorescein derivative. FITC is often used to label biological macromolecules such as antibodies and proteins. FITC can also be used to label nucleic acids. FITC can be used as a fluorescent probe to detect cell viability, cell apoptosis, etc. FITC showed a maximum excitation wavelength of 494 nm and yellow-green fluorescence at a maximum emission wavelength of 520 nm.

Tetramethylrhodamine-5-iodoacetamide (5-TMRIA) is a thiol-selective reactive dye used to non-specifically label proteins through cysteine residues and to covalently label DNA fragments [1].

5(6)-FITC (Fluorescein isothiocyanate), or Fluorescein 5(6)-isothiocyanate, is a versatile amine-reactive derivative of fluorescein dye. It serves as an effective label for antibodies and other probes, finding utility in fluorescence microscopy, flow cytometry, and immunofluorescence-based assays such as ELISA and Western blotting.