Others

BP Fluor 405 DBCO is a blue-fluorescent dye that often used in multi-color applications, including flow cytometry and super-resolution microscopy using STORM. Its excitation is ideally suited for the 407 nm spectral line of the krypton laser or the 408 nm violet laser diode. BP Fluor 405 DBCO reacts with azides via a copper-free click chemistry reaction to form a stable triazole and does not require a Cu-catalyst or elevated temperatures.

BP Fluor 430 Azide is a water-soluble, green-fluorescent, azide-activated probe that reacts with terminal alkynes via a copper-catalyzed click reaction (CuAAC). It also reacts with strained cyclooctyne via a copper-free click chemistry reaction to form a stable triazole and does not require a Cu-catalyst or elevated temperatures. BP Fluor 430 is a bright, photostable, green-fluorescent probe with excitation near its absorption maximum at 432 nm and emission maximum at 539 nm. This probe is water soluble and pH-insensitive from pH 4 to pH 10. A next generation probe, BP Fluor 430 Picolyl Azide, is also available for detection of low abundance alkyne-tagged biomolecules.

BP Fluor 430 Picolyl Azide is an advanced fluorescent probe that incorporatess a copper-chelating motif to raise the effective concentration of Cu(I) at the reaction site. The rate of the CuAAC reaction depends on the concentrations of all reagents, including copper, therefore raising the effective copper concentration at the reaction site will dramatically increase the rate of CuAAC reaction without the need to increase concentration of azide reagent or copper. In addition, the use of BP Fluor 430 Picolyl Azide instead of conventional BP Fluor 430 Azide allows for at least a tenfold reduction in the concentration of the copper catalyst without sacrificing the efficiency of labeling. In summary, the introduction of a picolyl moiety into an azide probe leads to a substantial increase in the sensitivity of alkyne detection. This is of special value for the detection of low abundance targets or where significant increase in signal intensity is desired.

BP Fluor 430 Alkyne is a green-fluorescent alkyne-activated probe routinely used for imaging of moderate to high abundance azide-containing biomolecules. BP Fluor 430 Alkyne reacts with azides via a copper-catalyzed click reaction (CuAAC) to form a stable triazole linker. BP Fluor 430 is a bright, photostable, green-fluorescent probe optimally excited near 430 nm. This probe is water-soluble and its fluorescence is pH independent over a wide pH range.

BP Fluor 430 DBCO reacts with azides via a copper-free click chemistry reaction to form a stable triazole and does not require a Cu-catalyst or elevated temperatures. In applications where the presence of copper is a concern, BP Fluor 430 DBCO is an ideal alternative to copper requiring fluorescent alkynes. BP Fluor 430 is a bright, photostable, green-fluorescent probe optimally excited near its absorption maximum at 432 nm. Its emission peak at 539 nm is pH independent over a wide pH range. BP Fluor DBCO reagent is not suitable for staining intracellular components of fixed and permeabilized cells due to high backgrounds.

BP Fluor 488 Azide is a multifunctional dye. Dyes are important tools in biological experiments, helping researchers observe and analyze cell structures, track biomolecules, evaluate cell functions, distinguish cell types, detect biomolecules, study tissue pathology, and monitor microorganisms. Their applications cover a wide range of fields from basic scientific research to clinical diagnosis. Dyes are also widely used in traditional fields such as textile dyeing, as well as emerging fields such as functional textile processing, food pigments, and dye-sensitized solar cells.

BP Fluor 555 Azide is a water-soluble, bright orange-fluorescent dye with excitation ideally suited for the 532 nm or 555 nm laser lines and visualized with TRITC (tetramethylrhodamine) filter sets. BP Fluor 555 conjugates of antibodies, peptides, and proteins are pH insensitive from pH 4 to pH 10. AF 555 conjugates ideally suited for detection of low abundance targets. BP Fluor 555 Azide can be reacted with terminal alkynes via a copper-catalyzed click reaction (CuAAC). It also reacts with strained cyclooctyne via a copper-free “click chemistry” reaction to form a stable triazole and does not require Cu-catalyst or elevated temperatures. The brightness and photostability of this dye are best suited to direct imaging of low-abundance targets.

BP Fluor 594 alkyne is a bright, red-fluorescent alkyne-activated probe routinely used for imaging of azide-containing biomolecules. BP Fluor 594 alkyne reacts with azides via a copper-catalyzed click reaction (CuAAC) to form a stable triazole linker.

Azidobutanamide-tri-(carboxyethoxymethyl)-methane is a aqueous soluble PEG linker with an azide group with three terminal carboxylic acids. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The terminal carboxylic acids can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond.

N-(TCO)-N-bis(PEG4-acid) is a branched click chemistry reagent with a terminal TCO group and two terminal carboxylic acids. This reagent can react with tetrazine-containing molecule to form a stable covalent bond . The inverse-electron demand Diels-Alder cycloaddition reaction of TCO with tetrazines is the fastest bioorthogonal reaction with exceptional selectivity. The terminal carboxylic acids can react with primary amino groups in the presence of activators (e.g. EDC, HATU ).

N-(acid-PEG10)-N-bis(PEG10-azide) is a very popular PEG reagent containing a terminal carboxylic acid and two azide groups. The hydrophilic PEG spacer increases solubility in aqueous media. The azide groups can react with alkyne, BCN, DBCO via Click Chemistry to yield a stable triazole linkage. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond.

t-Boc-N-Amido-PEG11-Tos is a PEG linker containing a tosyl group and Boc-protected amine group. The hydrophilic PEG spacer increases the water solubility of a compound in aqueous media. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The Boc group can be deprotected under mild acidic conditions to form a free amine.

SPDP-Gly-Pro-acid is a linker with SPDP and carboxylic acid moieties. The SPDP is an amine and thiol reactive crosslinker. It is also membrane permeable, allowing it to participate in intracellular crosslinking reactions. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond.

SPDP-Gly-Gly-methoxy is a linker with SPDP and methyl ester moiety. The SPDP is an amine and thiol reactive crosslinker. It is also membrane permeable, allowing it to participate in intracellular crosslinking reactions.

(Acid-PEG10)-Tri-(Azide-PEG10-ethoxymethyl)-methane can undergo Click Chemistry with Propargyl, BCN or DBCO reagents. Carboxylic acid (CO2H) group is reactive with primary amino groups in the presence of EDCor HATU.

Tri(Azide-PEG10-NHCO-ethyloxyethyl)amine is a branched PEG linker with three terminal azide groups. The azide groups enable PEGylation via Click Chemistry.

Tetra-(amido-PEG10-azide) is a branched PEG linker with four terminal azide groups. The azide groups enable PEGylation via Click Chemistry.

Methyltetrazine-amido-Tri-(acid-PEG1-ethoxymethyl)-methane is a click chemistry PEG reagent which contains three carboxylic acid groups and a methyltetrazine group. This reagent can react with TCO-containing compounds to form a stable covalent bond without the catalysis of Cu or elevated temperatures. The inverse-electron demand Diels-Alder cycloaddition reaction of TCO with tetrazines is the fastest bioorthogonal reaction with exceptional selectivity. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond.

N-Boc-N'-(PEG1-t-butyl ester)-L-Lysine-amido-Mal is the amino acid, lysine, with a maleimide at its C-terminus, a Boc-protecting group on its α-amine, and an amido-PEG1-t-butyl ester on its ε-amine. Maleimide is a thiol-reactive covalent group used to conjugate cysteine residues, while the Boc and the t-butyl ester can be later deprotected to perform further reactions.

(S)-2-amino-4-(2-(pyridin-2-yl)disulfanyl)butanoic acid is a small molecule reagent with a 2-thiopyridine linked to a short amino acid. SPDP is a thiol-specific labeling reagent, commonly used in reversibly binding cysteine residues on proteins. The disulfide bond it forms with the cysteine is selectively cleaved in the reducing environment of the cell cytoplasm.