QBD10553

MAL-dPEG^®₁₂-TFP ester

• Synonym(s): Polyethylene glycol
• Empirical Formula (Hill Notation): C₄₀H₆₀F₄N₂O₁₇
• Molecular Weight: 916.90
• MDL number: MFCD28505513
• UNSPSC Code: 12352108
• PubChem Substance ID: 329823942
• NACRES: NA.22

Properties

• Assay: >90%
• form: solid or viscous liquid
• reaction suitability: reactivity: thiol reactive; reagent type: cross-linking reagent; reactivity: amine reactive
• polymer architecture: shape: linear; functionality: heterobifunctional
• shipped in: ambient
• storage temp.: −20°C
• SMILES string: O=C(CCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCNC(CCN1C(C=CC1=O)=O)=O)OC2=C(C(F)=CC(F)=C2F)F

Description

Features and Benefits

MAL-dPEG^®₁₂-TFP ester is a heterobifunctional, linear crosslinking reagent containing a maleimide group on one end of the single molecular weight dPEG^® spacer arm and an amine-reactive active ester on the other end. The maleimide group reacts readily and specifically with free sulfhydryl groups in aqueous media at pH 6.5-7.5. 2,3,5,6-tetrafluorophenyl (TFP) ester ester is used widely in reactions with primary amines. The TFP-amine reactions can be carried out in aqueous or organic solvent. The dPEG^® spacer is hydrophilic and non-immunogenic. Because it is a single molecular weight product, it gives the user precise spatial control. The dPEG^® spacer also improves water solubility, decreases immunogenicity, and increases the hydrodynamic volume of the conjugate. The increased hydrodynamic volume results in longer serum half-life in vivo.

Legal Information

Products Protected under U.S. Patents # 7,888,536 B2

dPEG is a registered trademark of Quanta BioDesign

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable