Mercapto Reactive Dyes

Cyanine3 maleimide tetrafluoroborate is a specific labeling reagent for sulfhydryl groups with the λ_ex of 550 nm and λ_em of 580 nm. Cyanine3 maleimide tetrafluoroborate can be used for protein and peptide labeling.

Tetramethylrhodamine-6-maleimide is a fluorescent dye with a reactive sulfhydryl-specific moiety is covalently coupled to this cysteine. Tetramethylrhodamine-6-maleimide can be used as labels to detect local protein motions of the fully active Na+/K+-ATPase in real time.

N-(4-Anilino-1-naphthyl)maleimide is a fluorescent probe that can be used to detect thiol groups in proteins. N-(4-Anilino-1-naphthyl)maleimide reacts with thiol groups and immediately produces a stable fluorescent compound with the λ_ex=355 nm, λ_em=448 nm.

N-(3-Fluoranthyl)maleimide is a thiol fluorescent probe with a lifetime of 20 nsec. N-(3-Fluoranthyl)maleimide has a maximum excitation wavelength of 370 nm and can be used to study the time-dependent processes of biopolymers.

MTSEA-Fluorescein is a fluorescent probe that can be used for ion channel research.

N-4-(5,6-Dimethoxy-N-phthalimidinyl)phenylmaleimide is a fluorescence reagent for labeling thiol.

2-(2-Benzoxazolyl)phenyl benzoate is a photoactivated fluorescent dye.

L-Biotin-NH-5MP is a biotin-conjugated 5-Methylene pyrrolone (5MP). 5-Methylene pyrrolones (5MPs) are thiol-specific, reversible bioconjugation reagents for cysteine-specific protein modification, that are commonly used for protein bioconjugation.

5MP-Propargyl is the derivative of 5-Methylene pyrrolone (5MP). 5-Methylene pyrrolones (5MPs) are thiol-specific, reversible bioconjugation reagents for cysteine-specific protein modification, that are commonly used for protein bioconjugation. 5MP-Propargyl is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Br-5MP-Propargyl is the derivative of 5-Methylene pyrrolone (5MP). 5-Methylene pyrrolones (5MPs) are thiol-specific, reversible bioconjugation reagents for cysteine-specific protein modification, that are commonly used for protein bioconjugation. Br-5MP-Propargyl is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

5MP-Fluorescein (compound 3e) is a fluorescein dye base on 5-Methylene pyrrolone (5MP).5-Methylene pyrrolones are highly thiol-specific and tracelessly removable bioconjugation tools.

6-Iodoacetamidofluorescein, a sulphhydryl-specific fluorescent dye, and can be used to selectively label the -SH groups of nuclear matrix polypeptides and proteins.

NIR-Thiol dinitrobenzenesulfonate has both absorption and emission in the NIR region. NIR-Thiol dinitrobenzenesulfonate responds to thiol with a large turn-on NIR fluorescence signal upon excitation in the NIR region. NIR-Thiol dinitrobenzenesulfonate is capable of imaging endogenously produced thiol in living cells and mice.

NIR dye-1 (Compound 1h) is a near-infrared (NIR) fluorescent dye. NIR dye-1 has absorption and emission in the NIR region, while retaining an optically tunable hydroxyl group.