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4-Arm-PEG5000-Norbornene is a four-armed PEG derivative. The core structure of 4-Arm-PEG5000-Norbornene consists of four PEG chains, each modified at the end with norbornene molecules. 4-Arm-PEG5000-Norbornene can be used for bioconjugation and drug delivery.

4-Arm-PEG10000-Norbornene is a four-armed PEG derivative. The core structure of 4-Arm-PEG10000-Norbornene consists of four PEG chains, each modified at the end with norbornene molecules. 4-Arm-PEG10000-Norbornene can be used for bioconjugation and drug delivery.

4-Arm-PEG20000-Norbornene is a four-armed PEG derivative. The core structure of 4-Arm-PEG20000-Norbornene consists of four PEG chains, each modified at the end with norbornene molecules. 4-Arm-PEG20000-Norbornene can be used for bioconjugation and drug delivery.

4-Arm-PEG2000-Norbornene is a four-armed PEG derivative. The core structure of 4-Arm-PEG2000-Norbornene consists of four PEG chains, each modified at the end with norbornene molecules. 4-Arm-PEG2000-Norbornene can be used for bioconjugation and drug delivery.

5,10,15,20-Tetrakis(4-fluorophenyl)-21H,23H-porphine is a metal-organic framework (MOF).

2-Arm PEG1000-COOH is a multi-arm PEG derivative that can be used for drug delivery.

2-Arm PEG2000-COOH is a multi-arm PEG derivative that can be used for drug delivery.

2-Arm PEG3400-COOH is a multi-arm PEG derivative that can be used for drug delivery.

4-Arm PEG40000-NH2 (4-Arm PEG40000-amine) is a multi-arm PEG derivative with amine groups at each end of four arms attached to a pentaerythritol core. The reactive primary amine or NH2 groups can react rapidly with activated carboxylic acids such as NHS esters to form stable amide bonds.

4-Arm PEG40000-SH (4-Arm PEG40000-thiol) is a multi-arm PEG derivative with thiol groups at each end of the four arms. The reactive free thiol, SH or sulfhydryl groups react selectively with maleimide and transition metal surfaces including gold and silver.

4-Arm-PEG5000-Maleimide can be used for site-specific protein and peptide modification and can be used for drug delivery.

4-Arm-PEG40000-Maleimide can be used for site-specific protein and peptide modification and can be used for drug delivery.

4-Arm PEG5000-SCM is a multi-arm PEG derivative that can be used for peptide modification and drug delivery.

4-Arm PEG-SCM (MW 40000) is a multi-arm PEG derivative that can be used for peptide modification and drug delivery.

4-Arm PEG5000-alkyne is a multi-arm PEG derivative with alkynyl groups at each end of four arms attached to a pentaerythritol core. PEG alkyne can be used for PEGylation via copper-catalyzed click chemistry with azides.

4-Arm PEG10000-alkyne is a multi-arm PEG derivative with alkynyl groups at each end of four arms attached to a pentaerythritol core. PEG alkyne can be used for PEGylation via copper-catalyzed click chemistry with azides.

4-Arm PEG20000-alkyne is a multi-arm PEG derivative with alkynyl groups at each end of four arms attached to a pentaerythritol core. PEG alkyne can be used for PEGylation via copper-catalyzed click chemistry with azides.

4-Arm PEG40000-alkyne is a multi-arm PEG derivative with alkynyl groups at each end of four arms attached to a pentaerythritol core. PEG alkyne can be used for PEGylation via copper-catalyzed click chemistry with azides.

4-Arm PEG10000-Azide (4-Arm PEG10000-N3) is a multi-arm PEG derivative with an azide group at each end of four arms attached to a pentaerythritol core.

4-Arm PEG20000-Azide (4-Arm PEG20000-N3) is a multi-arm PEG derivative with an azide group at each end of four arms attached to a pentaerythritol core.