Fluorescein Dyes

5-FITC tyramide is a green fluorescent dye composed of FITC (HY-66019) and tyramide (Ex=488 nm, Em=525 nm). 5-FITC tyramide is utilized as reporter fluorescent substrate of horseradish peroxidase (HRP)-catalyzed deposition for tyramide signal amplification (TSA). 5-FITC tyramide can be used for multiplex immunohistochemistry (mIHC).

FITC-PEG1000-NHS is a fluorescent dye composed of polyethylene glycol (PEG), FITC (HY-66019) and a hydroxysuccinimide (NHS) group. The NHS group can react with amine-containing groups. FITC-PEG1000-NHS can be used for fluorescent labeling and imaging.

Fluorescein O-methacrylate (Methacryloyloxy fluorescein) is a pH-responsive fluorescent monomeric dye. Fluorescein O-methacrylate exhibits pH-responsive fluorescence properties: its fluorescence is activated under alkaline conditions and quenched under neutral or acidic conditions; reversible switching of fluorescence is achievable by adjusting the pH of the solution. Fluorescein O-methacrylate can be used as a monomer for the synthesis of amphiphilic fluorescein polymers. These polymers can self-assemble into stable polymer nanoparticles with enhanced aqueous-phase fluorescence, and also enable the conjugation of nanoparticles with amine-containing biomolecules to support sensitive optical detection of biomarkers (Ex/Em = 490/520 nm).

Fluorescein O,O′-diacrylate (Diacryloyloxyfluorescein) is a fluorescent compound with good biocompatibility and cell labeling ability. Fluorescein O,O′-diacrylate is often used in biological imaging and cell tracking research, and can effectively label cells and track their dynamic changes in vivo. Fluorescein O,O′-diacrylate is also used in compound delivery systems to improve the localization accuracy and inhibitory effect of compounds. Fluorescein O,O′-diacrylate is also used to prepare polymer materials to enhance their optical properties and biological interactions.

FAM amine, 6-isomer is a fluorescein derivative with an amine group and contains an isomer of the fluorophore. Can be used to modify biomolecules through enzymatic transamination. Its fatty amine groups can also react with electrophiles such as activated esters. The amine can also be conjugated to carbonyl compounds (aldehydes and ketones) by reductive amination.

DSPE-PEG3400-FITC is a fluorescein attached PEG lipid. It can be used to prepare liposomes as drug carrier in targeted drug delivery. The polymer is modified with fluorescein (green) dye which can be used for staining cells, tissues, biomarkers, or nanoparticles.

FITC-PEG5000-DBCO is a fluorescent dye composed of FITC (HY-66019), PEG and dibenzocyclooctyne (DBCO). DBCO is a cycloalkyne that can react with molecules containing azide groups through "click chemistry" to achieve coupling (Ex/Em=488/525 nm).

Fluorescein-maleimide (5-FITC-Maleimide) is a thiol-reactive fluorescent derivatization reagent and non-specific protein labeling reagent. Fluorescein-maleimide covalently binds to protein thiol groups for protein labeling. Fluorescein-maleimide covalently binds to protein amino and imidazole groups under neutral pH conditions. Fluorescein-maleimide is used for fluorescent labeling of proteins, nucleic acids or other molecules containing one or more thiol groups (Ex/Em = 494/519 nm).

DSPE-PEG10000-FITC is an amphiphile PEG polymer which has unsaturated lipid tails. DSPE-PEG10000-FITC can form micelles in an aqueous solution and can be used to prepare liposome/nano particles for drug nanocarriers.

FITC-PEG3400-NHS is a fluorescent dye composed of polyethylene glycol (PEG), FITC (HY-66019) and a hydroxysuccinimide (NHS) group. The NHS group can react with amine-containing groups. FITC-PEG3400-NHS can be used for fluorescent labeling and imaging.

FITC-hyodeoxycholic acid is a hyodeoxycholic acid labeled with FITC, which can be used to study the mechanism of action of hyodeoxycholic acid.

FITC-mPEG2000 is a fluorescent dye composed of methoxypolyethylene glycol (mPEG) and FITC (HY-66019). FITC-mPEG2000 can be used for fluorescent labeling and imaging.

5(6)-Carboxynaphthofluorescein is a pH-dependent fluorophore. 5(6)-Carboxynaphthofluorescein shows good sensitivity in an alkaline pH range and it can be exploited in the construction of fiber-optic pH sensors. 5(6)-Carboxynaphthofluorescein can be used as a fluorescent pH indicator (Ex/Em=593/668 nm).

FITC-PEG400-NH2 is a fluorescent dye composed of polyethylene glycol (PEG), FITC (HY-66019) and an amino group. FITC-PEG400-NH2 can be used for fluorescent labeling and imaging.

Fluorescein-CM2 is a fluorogenic molecule that can be used to rapidly screen esterase cut sites for protein-protein interaction-dependent (PPI-dependent) esterase activity in E. coli.

4-Methylherniarin (7-Methoxy-4-methylcoumarin) is a coumarin derivative and fluorescent label, has an antimicrobial activitiy against both gram positive and gram negative bacterial stains. 4-Methylherniarin displays good activity against B. subtilis and S.sonnei with IC₅₀ values of 11.76 μg/ml and 13.47 μg/ml.

FITC-mPEG5000 is a fluorescent dye composed of methoxypolyethylene glycol (mPEG) and FITC (HY-66019). FITC-mPEG5000 can be used for fluorescent labeling and imaging.

FITC-Heparin is a fluorescent dye composed of FITC (HY-66019) and Heparin. FITC-Heparin can be used for cell tracing and drug delivery.

Oregon green 488 azide (Difluorocarboxyfluorescein azide, 6-isomer) is a bright green fluorescent azide-activated probe that reacts with terminal alkynes via copper-catalyzed azide-alkyne cycloaddition (CuAAC). Oregon green 488 azide can label goat anti-mouse IgG and exhibits excellent luminescence efficiency. Oregon green 488 azide, as a streptavidin conjugate, is used for flow cytometry staining of macrophages.

Fluorescein-PEG4-NHS ester is a colorimetric probe formed by the reaction of adipic dihydrazide and fluorescein isothiocyanate.