Azide

Endo-1,4-β-mannanase is an important catalyst that randomly cleaves the β-1,4-linkages in the main chain of mannan, releasing short-chain β-1,4-mannan and mannose. The catalytic activity of Endo-1,4-β-mannanase toward locust bean gum is enhanced by Mn ²⁺, Co ²⁺, Ca ²⁺, Ba ²⁺, Triton X-100, sodium azide and N-ethylmaleimide, completely inhibited by Hg ²⁺ and N-bromosuccinimide, and partially inhibited by EDTA and Cu ²⁺. Endo-1,4-β-mannanase can be used in studies related to plant hemicellulose degradation, biomass saccharification, elimination of anti-nutritional factors in feed, and manno-oligosaccharide prebiotics .

Methyltetrazine-amido-N-bis(PEG4-acid) is a click chemistry reagent containing an azide group. Methyltetrazine-amido-N-bis(PEG4-acid) is a PEG derivative that contains a methyltetrazine group and two acid groups. 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. PEG linker increases the water solubility of the compound. Reagent grade, for research use only . Methyltetrazine-amido-N-bis(PEG4-acid) is a click chemistry reagent, it contains a Tetrazine group that can undergo an inverse electron demand Diels-Alder reaction (iEDDA) with molecules containing TCO groups.

Bis-PEG4-NHS ester is a crosslinking reagent and amine-reactive modulator .Bis-PEG4-NHS ester reacts with primary amine groups on liposome surfaces via amide bond formation to covalently attach dibenzylcyclooctyne groups, with a hydrophilic PEG4 spacer reducing steric hindrance for subsequent click chemistry .Bis-PEG4-NHS ester enables site-specific antibody coupling to liposome surfaces via copper-free strain-promoted alkyne-azide cycloaddition click chemistry without disrupting liposome structure in minimal organic solvent volumes .Bis-PEG4-NHS ester undergoes hydrolysis during annealing to form -COOH groups that interact with PbI and FAI to enhance perovskite structural integrity, passivate defects, and modulate nucleation kinetics to regulate crystal growth .Bis-PEG4-NHS ester enhances device efficiency and long-term stability when used as an antisolvent additive for p-i-n perovskite solar cells .