Pyranine (Solvent Green 7) is reported as a new class of fluorescent chemosensor for the Cu+ ion.

Fast Green FCF (FD&C Green No. 3), a safe biocompatible color additive, has been suggested to mitigate chronic pain.

DHPDS disodium salt, a pH-sensitive fluorescent dye, is utilized to measure intracellular pH (pHi) from the surface fluorescence of the isolated perfused rat liver [1].

Alexa Fluor 430 NHS ester is a compound used to conjugate the green fluorescent dye Alexa Fluor 430 with proteins or antibodies. Alexa Fluor 430 provides stable signal generation in imaging and flow cytometry. The NHS ester is suitable for labeling proteins, amine-modified oligonucleotides, and other primary amine-containing molecules (R-NH2).

FAM-Danvatirsen is a Danvatirsen compound labeled with the FAM fluorophore. It targets STAT3 and is utilized for tumor research.

D-Ala-Lys-AMCA, a known substrate of proton-coupled oligopeptide transporter 1 (PEPT1), emits blue fluorescence and may be transported into Caco-2 cells and liver cancer cells.

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).

AF430 Carboxylic Acid TEA Salt is the triethylammonium salt derivative of AF430. AF430 has a maximum absorption around 430 nm and a maximum emission at 542 nm, emitting yellow-green fluorescence. This dye is suitable for cellular imaging, flow cytometry, and biochemical assays, enabling observation and tracking of biomolecules. It is a widely used functional fluorescent probe in life science research.

(E)-4-Dimethylamino-N-methylstilbazolium iodide (Py-NMe2) is a styrene-based dye employed in sensing various double-stranded DNA/RNA sequences using fluorescence and circular dichroism (CD) techniques. Its absorption maximum is 450 nm, and its emission maximum is 615 nm.

Calcein tetraethyl ester is a Calcein derivative and serves as an intermediate in the synthesis of Calcein AM. Calcein is a fluorescent dye and self-quenching probe, serving as an indicator of lipid vesicle leakage and a chelating indicator for EDTA calcium ion titration and fluorescent calcium ion assays.

5-FAM-LL-37 TFA is the TFA salt form of 5-FAM-LL-37. This fluorescein-labeled LL-37 peptide maintains the antimicrobial and immunomodulatory properties of LL-37. It binds to bacterial cell membranes, disrupting their integrity, and exhibits broad-spectrum antibacterial activity.

4-Methylumbelliferyl-β-D-galactoside (MUG) is a fluorogenic substrate for β-galactosidase (β-gal).1Hydrolysis of MUG by β-gal releases the fluorescent moiety 4-MU, which displays a pH-dependent excitation maximum of 330, 370, and 385 nm at pH 4.6, 7.4, and 10.4, respectively, and an emission maximum between 445-454 nm.2MUG has been used to detect β-gal activity in intact bacteria, yeast, and mammalian cells.1 1.Vidal-Aroca, F., Giannattasio, M., Brunelli, E., et al.One-step high-throughput assay for quantitative detection of β-galactosidase activity in intact Gram-negative bacteria, yeast, and mammalian cellsBiotechniques40(4)433-434(2006) 2.Zhi, H., Wang, J., Wang, S., et al.Fluorescent properties of hymecromone and fluorimetric analysis of hymecromone in compound dantong capsuleJ. Spectrosc.1(1)147128(2013)

CMFDA is a cell-permeant fluorescent dye widely employed as a whole-cell-tracking reagent. Upon intracellular enzymatic conversion, it forms a stable, fluorescent adduct that allows long-term monitoring of cell proliferation, migration, and viability. CMFDA is particularly valuable in studies requiring sustained, non-toxic labeling of living cells for imaging and flow cytometry.

PSP is a two-photon fluorescent probe designed for the selective and sensitive detection of H2Sn in living cells and tumor spheroids (excitation/emission wavelength = 440/640 nm). It is applicable for use in ferroptosis research.

5-FAM-Ahx-LL-37 TFA is a 5-FAM labeled version of LL-37, human. The carboxyfluorescein moiety is attached via 6-Aminohexanoic acid (Ahx). LL-37, human, is a 37-residue amphipathic antimicrobial peptide, derived from an antibiotic, possessing broad-spectrum antimicrobial activity.

PRMT5-targeted fluorescent ligand-1 (Compound 7) is a fluorescent ligand specific to PRMT5 that inhibits this target with an IC50 value of 29.39 nM. It demonstrates cellular imaging activity with strong fluorescence signals in MCF-7 cells, showing an IC50 of 29 nM. Additionally, it induces apoptosis (cell death). The compound's maximum excitation wavelength is 438 nm, and its maximum emission wavelength is 550 nm.