Protein Modification Reagents

Medchemexpress LLC Biotin-PEG4-amide-C6-azide | 1006592-62-6 | MFCD30478293 | 99.1% | C27H49N7O7S | 10MG

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Biotin-PEG4-amide-C6-azide is a biotinylated PEG4 amide linker terminating in an azide group, formulated as a high-purity research reagent for click chemistry and bioconjugation. It is suitable for linker assembly, affinity capture, and labeling workflows, and is soluble in DMSO and common co-solvent systems.

• High purity suitable for analytical and preparative applications.
• Terminal azide enables copper-catalyzed azide-alkyne cycloaddition for efficient conjugation.
• PEG4 spacer provides flexibility and improved aqueous solubility.
• Soluble in DMSO and compatible with typical in vivo co-solvent formulations.
• Well suited for affinity capture, labeling, and linker assembly workflows.

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Medchemexpress LLC DSPE-PEG5000 maleimide ammonium salt | 474922-22-0 | 98.4% | (C2H4O)nC51H92N1O13P.H3N | 10MG

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DSPE-PEG5000-Mal is a lipid-polyethylene glycol conjugate bearing a terminal maleimide group for selective thiol coupling. It integrates into lipid bilayers to functionalize liposomes and lipid nanoparticles, while the PEG5000 chain provides steric stabilization and extended circulation in biological media.

• Maleimide-functional group enables selective thiol conjugation.
• PEG5000 chain provides steric stabilization and prolongs circulation time.
• Phospholipid anchor integrates into lipid bilayers and nanocarriers.
• High reported purity supports reproducible formulation performance.
• White to off-white solid suitable for analytical handling and storage.

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Medchemexpress LLC Poly(oxy-1,2-ethanediyl) α-(folate-conjugated DSPE) ammonium salt | 1236288-25-7 | 95.7% | C65H114N11O16P | 10MG

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DSPE-PEG-Folate is a PEGylated phospholipid conjugated to folic acid used to confer folate-mediated targeting to liposomal and lipid nanoparticle formulations. It promotes receptor-mediated uptake by folate-receptor-expressing cells and supports targeted delivery and imaging applications.

• Folate-mediated targeting to folate receptor-expressing cells.
• Pegylation enhances circulation time and colloidal stability.
• Compatible with liposome and lipid nanoparticle formulations.
• High purity suitable for research and formulation work.
• Available in small-scale sizes for development and testing.

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eMolecules​ Broadpharm / Azide-PEG8-Val-Cit-Doxorubicin / 5mg / 784454862 / BP-29761 / 95.000 / / [null] / 1485.559 / C68H96N10O27

Broadpharm / Azide-PEG8-Val-Cit-Doxorubicin / 5mg / 784454862 / BP-29761 / 95.000 / / [null] / 1485.559 / C68H96N10O27

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eMolecules​ Broadpharm / 14-(Amide-PEG4-ethylcarbamoyl)tridecanoic t-butyl ester / 100mg / 784455750 / BP-40053 / 95.000 / / [null] / 532.763 / C28H56N2O7

Broadpharm / 14-(Amide-PEG4-ethylcarbamoyl)tridecanoic t-butyl ester / 100mg / 784455750 / BP-40053 / 95.000 / / [null] / 532.763 / C28H56N2O7

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Medchemexpress LLC S R S-Ahpc-Peg4-N3 25Mg | HY-103601-25MG

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S R S-Ahpc-Peg4-N3 25Mg

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eMolecules​ Broadpharm / HO-PEG-Fluor-647 TEA salts MW 2000 / 5mg / 798871047 / BP-40408 / / / [null] / 1047.230 / C44H62N4O17S4

Broadpharm / HO-PEG-Fluor-647 TEA salts MW 2000 / 5mg / 798871047 / BP-40408 / / / [null] / 1047.230 / C44H62N4O17S4

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Broadpharm TCO-PEG3-NHS ESTER| 25mg| 2141981-88-4

TCO-PEG3-NHS ESTER| 25mg| 2141981-88-4

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eMolecules​ Broadpharm / DBCO-PEG4-PABA / 50mg / 761705535 / BP-28866 / 95.000 / / [null] / 671.747 / C37H41N3O9

Broadpharm / DBCO-PEG4-PABA / 50mg / 761705535 / BP-28866 / 95.000 / / [null] / 671.747 / C37H41N3O9

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eMolecules​ Broadpharm / 16-(Azide-PEG3-ethylcarbamoyl)pentadecanoic-t-butyl ester / 100mg / 784454990 / BP-29797 / 95.000 / / [null] / 542.762 / C28H54N4O6

Broadpharm / 16-(Azide-PEG3-ethylcarbamoyl)pentadecanoic-t-butyl ester / 100mg / 784454990 / BP-29797 / 95.000 / / [null] / 542.762 / C28H54N4O6

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eMolecules​ Broadpharm / 14-(Amine-PEG5-ethylcarbamoyl)tridecanoic-t-butyl ester / 100mg / 784455389 / BP-29942 / 95.000 / / [null] / 576.816 / C30H60N2O8

Broadpharm / 14-(Amine-PEG5-ethylcarbamoyl)tridecanoic-t-butyl ester / 100mg / 784455389 / BP-29942 / 95.000 / / [null] / 576.816 / C30H60N2O8

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eMolecules​ Broadpharm / 14-(Amine-PEG3-ethylcarbamoyl)tridecanoic t-butyl ester / 100mg / 784455746 / BP-40052 / 95.000 / / [null] / 488.710 / C26H52N2O6

Broadpharm / 14-(Amine-PEG3-ethylcarbamoyl)tridecanoic t-butyl ester / 100mg / 784455746 / BP-40052 / 95.000 / / [null] / 488.710 / C26H52N2O6

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CONJU PROBE LLC DBCO-PEG4-NHS | 4x2mg

DBCO-PEG4-NHS | Putity: >95% | MW: 649.26 | 4x2mg

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Enzo Life Sciences Caspase-6 (human), (recombinant) (5000 U)

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Alternative name: Mch2. Concentration: 100 U/µl. Purity: ≥80% (SDS-PAGE). Formulation: Liquid. In 50mM HEPES, pH 7.4, containing 100mM sodium chloride, 0.5% CHAPS, 1mM EDTA, 10% glycerol and 10mM DTT. Source: Produced in E. coli. Long Term Storage: -80°C.

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NANOPROBES INC

NC3922037 CLICK MONO-DBCO-NANOGOLD 1.4NM

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