5-carboxyfluorescein

5-FAM (5-Carboxyfluorescein) (5-Carboxyfluorescein) contains a carboxylic acid, which can be used to react with primary amines via carbodiimide activation of the carboxylic acid. Fluorescein is the most common fluorescent derivatization reagent for labeling biomolecules. In addition to its excellent fluorescence quantum yield, relatively high absorptivity, and good water solubility, it also has an excitation maximum that closely matches the 488 nm spectral line of the argon-ion laser.

5-CFDA (5-Carboxyfluorescein diacetate)(5-Carboxyfluorescein diacetate) is membrane-permeant. It can be loaded into cells via incubation and hydrolyzed by intracellular esterases to 5-carboxyfluorescein that is used for labeling human intervertebral disk cells in vitro for fluorescence microscopy.

5-diacetate FAM NHS (5-CFDA SE) is a cell-permeable fluorescent tracer for use in fluorescence microscopy and flow cytometry, Ex=492 nm, Em=517 nm.

5-FAM-LPETGG is a fluorescent peptide that combines the sortase recognition sequence LPETGG with the fluorescent label 5-carboxyfluorescein (5-FAM), characterized by excitation/emission maxima at 492/518 nm. It serves for site-specific labeling of target proteins through sortase-catalyzed transpeptidation.

5-FAM-LL-37 is a fluorescently labeled antimicrobial peptide conjugated to 5-carboxyfluorescein (5-FAM) through a 6-aminohexanoic acid (Ahx) linker, featuring excitation/emission maxima at 492/518 nm, respectively. This compound integrates the functional attributes of LL-37 with the fluorescent properties of 5-FAM for enhanced visualization.

CFSE (CFDA-SE) is a fluorescent dye with cell membrane permeability. CFSE irreversibly binds to intracellular proteins in living cells and is used for the detection of cell proliferation. The labeled cells fluoresce in green color with excitation wavelength of 488 nm and emission wavelength of 518 nm.

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.

5(6)-CFDA (5-(6)-Carboxyfluorescein diacetate) is a cell-permeant esterase substrate that can serve as a viability probe that measures both enzymatic activities, which is required to activate its fluorescence, and cell-membrane integrity, which is required for intracellular retention of their fluorescent product.

5(6)-FAM SE (5(6)-Carboxyfluorescein N-hydroxysuccinimide ester) is an amine-reactive green fluorescent dye. 5(6)-FAM SE is widely used for labeling proteins or other molecules that contain a primary or secondary aliphatic amine.

BCECF is a pH-sensitive fluorescent dye and a cytosolic pH indicator. It can be used for detecting intracellular pH levels.

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.

5-FAM-NH2.HCl is a derivative fluorescent dye of 5-FAM. 5-FAM (5-Carboxyfluorescein) is a green fluorescent probe and fluorescein derivative used for labelling peptides, proteins, and nucleic acids, with excitation/emission wavelengths of 490/520 nm.

5-CFDA-AM is a cell-permeable esterase substrate used as an active probe to evaluate enzyme activity and cell membrane integrity. Electroneutral and able to enter cells at lower concentrations than CFDA, it undergoes intracellular hydrolysis by esterases to produce carboxyfluorescein, which possesses an extra negative charge, enhancing cellular retention [1].

5(6)-Carboxyfluorescein diisobutyrate, a protected form of 5(6)-carboxyfluorescein, serves as a fluorescence pH indicator [1].