QBD10551

MAL-dPEG^®₄-TFP ester

• Synonym(s): Polyethylene glycol
• Empirical Formula (Hill Notation): C₂₄H₂₈F₄N₂O₉
• Molecular Weight: 564.48
• MDL number: MFCD28505515
• UNSPSC Code: 12352108
• PubChem Substance ID: 329823940
• NACRES: NA.22

Properties

• assay: >90%
• form: solid or viscous liquid
• reaction suitability: reactivity: thiol reactive; reagent type: cross-linking reagent; reactivity: amine reactive
• functional group: ester; maleimide
• polymer architecture: shape: linear; functionality: heterobifunctional
• shipped in: ambient
• storage temp.: −20°C
• SMILES string: O=C(NCCOCCOCCOCCOCCC(OC1=C(F)C(F)=CC(F)=C1F)=O)CCN2C(C=CC2=O)=O

Description

Features and Benefits

MAL-dPEG^®₄-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 number following the dPEG^® refers to the exact number of spacer units present in the spacer arm. The maleimide group reacts readily and specifically with free sulfhydryl groups in aqueous media at pH 6.5-7.5. The 2,3,5,6-tetrafluorophenyl (TFP) 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: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable