Labelling

BP Fluor 660 (almost identical to Alexa Fluor® 660 and CF660® 680RD) NHS Ester is a bright and photostable far-red dye that emits fluorescence at about 685 nm in the borderline spectral region between far-red and near-IR. Although the absorption maximum is at around 665 nm, this dye can be sufficiently excited by the 633 or 647 nm laser. It reacts with the amine group in antibody, proteins, peptides, amino-modified oligos, and other target molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

BP Fluor 660 (almost identical to Alexa Fluor® 660 and CF660® 680RD) Maleimide is a bright and photostable far-red dye that emits fluorescence at about 685 nm in the borderline spectral region between far-red and near-IR. Although the absorption maximum is at around 665 nm, this dye can be sufficiently excited by the 633 or 647 nm laser. It reacts with the thiol- or cysteine group in antibody, proteins, peptides, SH-modified oligos, and other target molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

MB 800Z NHS ester is a conceptually new class of sterically shielded NIR cyanine heptamethine dye with emission wavelengths >740 nm. This dye contains two shielding PEG arms directly over both faces of the heptamethine fluorochrome blocking any undesired bimolecular association processes, resulting in a significant increase in fluorescence brightness. MB 800Z NHS ester reacts with the amine group in antibody, proteins, peptides, amino-modified oligos, and other target molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

BDP FL-PEG8-amine TFA salt is a BDP FL linker containing an amine group and a hydrophilic PEG spacer arm. The amine group makes the compound more reactive toward carboxylic acids, NHS esters and other carbonyl groups. The hydrophilic PEG spacer arm can increase water solubility. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

BDP FL-PEG4-Mal is a BDP FL linker containing a maleimide group, which selectively reacts with free thiol, sulfhydryl, or mercapto group via Michael addition to form a stable carbon sulfur bond. BDP FL-PEG4-Mal is a bright and photostable thiol-reactive dye for protein labeling, peptide modification, and can replace fluorescein for microscopy. The hydrophilic PEG spacer arm increases water solubility, membrane permability, and conjugation efficiency. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

DBCO-PEG4-3-formylbenzamide

Fluorescein-PEG8-azide is a xanthene dye with excitation/emission maximum of 494/517 nm and an azide group. It 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. It could be used as a quantum yield standard. Hydrophilic PEG spacer increases solubility in aqueous media and reduces steric hindrance during binding. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

AMCA-PEG4-Amine, TFA salt is a AMCA dye linker containing an amine group and a hydrophilic PEG spacer arm. The amine group makes the compound more reactive toward carboxylic acids, NHS esters and other carbonyl groups. The hydrophilic PEG spacer arm increases water solubility as well as membrane permability. This dye is used for protein and peptide labeing. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

bis-DBCO-PEG. MW 20,000 is a homobifunctional PEG polymer possessing two terminal DBCO moieties. DBCO will react with azide-containing compounds or biomolecules to form a stable triazole linkage without a copper catalyst. The 20k PEG units elevate the solubility of the compound in aqueous media.