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Protein Modification Reagents

Chemical agents used to modify the amino acid side chains of proteins in order to alter their native charges, block or expose reactive binding sites, inactivate functional groups, and change functional groups to create targets for crosslinking and labeling.
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Search Within Results
Keyword Search:
2,041 – 2,055 of 5,667 results
2,041

eMolecules​ DSPE-PEG-Boronate, MW 3,400 | Broadpharm |1045.130 | C53H95BFN2O14P | 98.000 | CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(O)(=O)OCCNC(=O)OCCOCC(=O)NCc1ccc(cc1F)B(O)O)OC(=O)CCCCCCCCCCCCCCCCC | 100mg | 718091659

DSPE-PEG-Boronate, MW 3,400 | Broadpharm |1045.130 | C53H95BFN2O14P | 98.000 | CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(O)(=O)OCCNC(=O)OCCOCC(=O)NCc1ccc(cc1F)B(O)O)OC(=O)CCCCCCCCCCCCCCCCC | 100mg | 718091659

ENCOMPASS_PREFERRED
2,042

Medchemexpress LLC MEDCHEMEXPRESS LLC
SDP

5000747342 MAL-PEG4-VAL-CIT-PAB 100MG

ENCOMPASS_PREFERRED
2,043

Medchemexpress LLC Dspe-peg2-mal | 1915739-87-5 | 99.9% | C55H100N3O14P | 10MG
SDP

DSPE-PEG2-mal is a PEG-based linker comprising a distearoylphosphatidylethanolamine (DSPE) lipid connected via a short PEG2 spacer to a maleimide functional group. It is intended for thiol-selective conjugation and linker installation in PROTACs, lipidated probes, and general bioconjugation research.

  • Contains a maleimide terminus for selective reaction with thiols.
  • Features a short PEG2 spacer to enhance solubility and flexibility.
  • Includes a DSPE lipid moiety for membrane anchoring and lipidation.
  • High reported purity supports reproducible synthesis and analysis.
  • Solid, white to off-white form for ease of handling and storage.
  • Available in multiple small-scale pack sizes suitable for research use.

ENCOMPASS_PREFERRED
2,044

eMolecules​ 134179-38-7 | N3-PEG(4)-NH2 | Chem-Impex | MFCD00269874 | 218.257 | C8H18N4O3 | 97.000 | NCCOCCOCCOCCN=[N+]=[N-] | 1g | 490843609

N3-PEG(4)-NH2 | Chem-Impex | 134179-38-7 | MFCD00269874 | 218.257 | C8H18N4O3 | 97.000 | NCCOCCOCCOCCN=[N+]=[N-] | 1g | 490843609

ENCOMPASS_PREFERRED
2,045

Cayman Chemical mal-PEG2-AZD 5mg
SDP

A bioconjugation linker; has been used in the development of protein- and peptidomimetic-antibody conjugates

ENCOMPASS_PREFERRED
2,046

Broadpharm AMINOOXY-PEG1-AZIDE 100MG

NC3863641 AMINOOXY-PEG1-AZIDE 100MG

ENCOMPASS
2,047

Medchemexpress LLC MEDCHEMEXPRESS LLC
SDP

5000759393 BIOTIN-PEG-AZIDE MW 50MG

ENCOMPASS_PREFERRED
2,048

eMolecules​ 882847-34-9 | Fmoc-NH-PEG6-CH2CH2COOH | Ambeed | MFCD06656474 | 575.655 | C30H41NO10 | 95.000 | OC(=O)CCOCCOCCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 5g | 552715488

Fmoc-NH-PEG6-CH2CH2COOH | Ambeed | 882847-34-9 | MFCD06656474 | 575.655 | C30H41NO10 | 95.000 | OC(=O)CCOCCOCCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 5g | 552715488

ENCOMPASS_PREFERRED
2,049

eMolecules​ 882847-34-9 | Fmoc-NH-PEG6-CH2CH2COOH | Ambeed | MFCD06656474 | 575.655 | C30H41NO10 | 95.000 | OC(=O)CCOCCOCCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 1g | 552715486

Fmoc-NH-PEG6-CH2CH2COOH | Ambeed | 882847-34-9 | MFCD06656474 | 575.655 | C30H41NO10 | 95.000 | OC(=O)CCOCCOCCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 1g | 552715486

ENCOMPASS_PREFERRED
2,050

Sigma Aldrich Fine Chemicals Biosciences Collagenase A, 100mg

Collagenase is a protease which cleaves the triple-helical protein called collagen.

ENCOMPASS
2,051

Sigma Aldrich Fine Chemicals Biosciences Collagenase from Clostridium histolyticum | 9001-12-1 | MFCD00130830 | 500mg

Collagenase from Clostridium histolyticum | 9001-12-1 | MFCD00130830 | 500mg

ENCOMPASS
2,052

CONJU PROBE LLC TETRAZINE-PEG-4-SS-NHS 10MG

Tetrazine-PEG-4-SS-NHS 10mg, 90%Purity

ENCOMPASS
2,053

Cayman Chemical PomalIdomIde 1mg
SDP

An inhibitor of cereblon (IC50 = ~3 µM for the human recombinant CRBN-DDB1 complex); inhibits autoubiquitination of CRBN in HEK293T cells expressing CRBN; inhibits proliferation of U266 myeloma cells at 0.1-10 µM; reduces tumor growth in a H929 R10-1 lenalidomide-resistant mouse xenograft model at 3 mg/kg per day when used in combination with dexamethasone

ENCOMPASS_PREFERRED
2,054

eMolecules​ 1807518-63-3 | tert-butyl 2-[2-(2-bromoethoxy)ethoxy]acetate | AA Blocks LLC | MFCD28122957 | 283.162 | C10H19BrO4 | 0.000 | CC(C)(C)OC(=O)COCCOCCBr | 250mg | 713349126

tert-butyl 2-[2-(2-bromoethoxy)ethoxy]acetate | AA Blocks LLC | 1807518-63-3 | MFCD28122957 | 283.162 | C10H19BrO4 | 0.000 | CC(C)(C)OC(=O)COCCOCCBr | 250mg | 713349126

ENCOMPASS_PREFERRED
2,055

eMolecules​ MAL-PEG2-NHS ESTER 250MG

5000191837 MAL-PEG2-NHS ESTER 250MG

ENCOMPASS_PREFERRED