Labelling

AMCA-PEG3-Methyltetrazine is a AMCA dye linker containing a terminal tetrazine group and a hydrophilic PEG spacer arm. The terminal methyltetrazine enables fast click reactions with TCO (trans-cycloctene) and 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.

An iso- branched chain fatty acid naturally found in bacterial cell membranes, fermented foods, animal fats, and dairy foods. Recent studies suggest iso- branched chain fatty acids modulate membrane fluidity (J. Phys. Chem. B 2014, 118, 48, 13838–13848) and function as bioactive components in foods (J. Agric. Food Chem. 2023, 71, 48, 18674–18684). Please contact us for multigram quantities or custom synthesis of any other iso- branched chain fatty acids. Reagent grade, for research purpose. Please contact us for GMP-grade .

AMCA-PEG4-Mal is a AMCA dye 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. 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.

AMCA-PEG4-Propargyl is a AMCA dye that reacts with terminal azide via a copper-catalyzed click reaction (CuAAC) to form a stable triazole linker. It is a popular labeling dye used in Click Chemistry reactions. 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.

BDP FL-PEG8-propargyl is a BDP FL linker containing a propargyl group. It can be reacted with terminal azide via a copper-catalyzed click reaction (CuAAC) to form a stable triazole linker. It is a popular labeling dye used in Click Chemistry reactions. BDP FL-PEG8-propargyl 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 permeability, and conjugation efficiency. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Amino-PEG24-acid, HCl salt is a bifunctional linker comprised of a terminal amino group that is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde), etc, and an acid that can react with primary amine groups in the presence of activators such as HATU.

AMCA-PEG8-Propargyl is a AMCA dye that reacts with terminal azide via a copper-catalyzed click reaction (CuAAC) to form a stable triazole linker. It is a popular labeling dye used in Click Chemistry reactions. 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-PEG8-Azide is a fluroescent reagent with an azide group for click chemistry conjugation with terminal alkynes via a copper-catalyzed click reaction or strained cyclooctynes via a copper-free click reaction. The hydrophilic PEG spacer arm increases water solubility, membrane permability, and conjugation efficiency. AMCA-PEG8-Azide is a popular blue fluorescent tagging molecule that has a maximal absorption of 345 nm and emission at 450 nm. This dye is used for protein and peptide labeing. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Amine-PEG8-benzyl ester contains an amine, which can be further derivatized, and a benzyl ester, which can be used to protect carboxyl groups from reactions that can occur at amino groups and can be deprotected under catalytic hydrogenic conditions.