Protein Modification Reagents
Medchemexpress LLC DSPE-NHS | 1383932-86-2 | MFCD34561791 | 95.0% | 945.21 g/mol | C49H89N2O13P | 5 MG
DSPE-NHS is an NHS-activated phospholipid reagent used for bioconjugation and liposome/nanocarrier preparation. It contains two hydrophobic stearoyl tails and an NHS ester that reacts with primary amines to form stable amide bonds; in aqueous solution it self-assembles into lipid bilayers and is commonly used to label antibodies and conjugate proteins.
- Reacts with primary amines to form stable amide linkages.
- Self-assembles into lipid bilayers in aqueous solution.
- Suitable for antibody labeling and protein conjugation.
- Solid form with practical storage recommendations for solvent and sealed conditions.
- Provided at high purity for research applications.
eMolecules Bromo-PEG24-t-butyl ester | | | 250mg
Broadpharm | Bromo-PEG24-t-butyl ester | 250mg | 452533439 | BP-24007 | 98.000 | | | 1266.355 | C55H109BrO26
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Medchemexpress LLC Mal-amido-PEG1-C2-NHS ester | 1260092-50-9 | 99.7% | 381.34 | C16H19N3O8 | 50 MG
Mal-amido-PEG1-C2-NHS ester is a non-cleavable antibody-drug conjugate (ADC) linker that contains a maleimide group and an N-hydroxysuccinimide (NHS) ester, used for bioconjugation to label primary amines on proteins, oligonucleotides, and other amine-containing molecules. The product is supplied as a high-purity, white to off-white solid and requires cold, inert storage to maintain stability.
- Contains maleimide and NHS ester functional groups.
- Enables selective labeling of primary amines.
- High purity (≈99.7%).
- Molecular weight 381.34 and formula C16H19N3O8.
- Available in multiple sizes including 50 mg.
- Store at -20°C, protect from light, under nitrogen; in solution: -80°C up to 6 months.
Medchemexpress LLC 4-((S)-2-((S)-2-(6-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)hexanamido)-3-methylbutanamido)-5-ur... | 2722697-82-5 | MFCD00867744 | 99.9% | 1126.65 g·mol-1 | C55H68ClN11O13 | 5 MG
MC-VC-PABC-amide-PEG1-CH2-CC-885 is a neoDegrader-linker conjugate that couples a GSPT1-targeting degrader payload to a cleavable linker via a short PEG spacer. It is supplied as a research reagent for biochemical and cell-based studies of targeted protein degradation and assay development.
- NeoDegrader-linker conjugate designed for targeted protein degradation studies.
- GSPT1-targeting degrader payload for selective biological activity.
- Cleavable valine-citrulline PABC-type linker enabling intracellular payload release.
- Short PEG spacer improves solubility and linker flexibility.
- High reported purity suitable for research applications.
- Soluble in DMSO; may require sonication, use anhydrous DMSO for best results.
- Store at -20°C, protect from light; in solvent store at -80°C for long-term storage.
Selleck Chemical LLC Mal-PEG2-AZD-E1273-5MG
Mal-amido-PEG2-C2-amido-Ph-C2-CO-AZD (Mal-PEG2-AZD) is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs
Medchemexpress LLC Cl-PEG4-acid 50mg
Cl-PEG4-acid is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1]
STA PHARMACEUTICAL US LLC Fmoc-NH-PEG6-CH2COOH | 100 g | CAS 437655-96-4 | MDL MFCD26142983
Fmoc-NH-PEG6-CH2COOH is a Amino Acid reagent (Subcategory: PEG AA) sold by WuXi TIDES. Offered in 100 g. Store at 4 °C. SDS available for reference.
Specifications
- CAS: 437655-96-4
- MDL: MFCD26142983
- InChIKey: HANLHKUCDRJGKX-UHFFFAOYSA-N
- Molecular Weight: 561.628
- Molecular Formula: C29H39NO10
- Purity: ≥95%
- Container Type: 500 mL HDPE
- Pack Size: 100 g
- Net Weight: 100 g
- Gross Weight: 160.5 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: 1-(9H-fluoren-9-yl)-3-oxo-2,7,10,13,16,19,22-heptaoxa-4-azatetracosan-24-oic acid
- SMILES: O=C(NCCOCCOCCOCCOCCOCCOCC(O)=O)OCC1C2=C(C3=C1C=CC=C3)C=CC=C2
![eMolecules Broadpharm / Bromo-PEG11-azide / 100mg / 779524430 / BP-29702 / 98.000 / 2098982-00-2 / [null] / 634.562 / C24H48BrN3O11](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502497385.JPG-250.jpg)
eMolecules Broadpharm / Bromo-PEG11-azide / 100mg / 779524430 / BP-29702 / 98.000 / 2098982-00-2 / [null] / 634.562 / C24H48BrN3O11
Broadpharm / Bromo-PEG11-azide / 100mg / 779524430 / BP-29702 / 98.000 / 2098982-00-2 / [null] / 634.562 / C24H48BrN3O11
Medchemexpress LLC Methyl-PEG4-NHS ester | 622405-78-1 | MFCD11041112 | 95.0% | 333.33 g/mol | C14H23NO8 | 500MG
m-PEG4-NHS ester is a methoxy-terminated polyethylene glycol (PEG4) linker bearing an N-hydroxysuccinimide (NHS) ester that enables efficient conjugation to primary amines. It is used as a spacer in bifunctional molecules and for labeling proteins or small molecules in synthesis workflows, offering improved solubility and flexible spacing.
- Reactive NHS ester for rapid coupling to primary amines.
- Methoxy-terminated PEG4 spacer to increase solubility and reduce aggregation.
- Approximately 333.33 g/mol molecular weight for predictable stoichiometry.
- High purity suitable for synthetic and bioconjugation applications.
- Available in multiple laboratory-scale quantities for flexible workflow planning.
Cayman Chemical BIOnT PROTAC Fragmnt lbrar 1mg
Customers are supplied with the following data package for EAch fragment purchases: • Aqueous buffer 1H NMR raw data file • Structures and physiochemical properties in an sd file • SPR Clean Screen results The parameters used in the design of the library are: • Heavy atoms ≤ 16 • clogP ≤ 3 • Hydrogen bond donors ≤ 1 • Hydrogen bond acceptors ≤ 3 • tPSA ≤ 60 • Rotatable bonds ≤ 3
![Medchemexpress LLC Spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-6-carboxamide | 412319-45-0 | 98.1% | 576.55 g·mol⁻¹ | C29H28N4O9 | 5 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000223507.png-250.jpg)
Medchemexpress LLC Spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-6-carboxamide | 412319-45-0 | 98.1% | 576.55 g·mol⁻¹ | C29H28N4O9 | 5 MG
6-FAM-PEG3-Azide is a fluorescein-based azide reagent for click-chemistry conjugation to alkyne-containing biomolecules, commonly used to label oligonucleotides. It combines a 6-carboxyfluorescein fluorophore with a PEG3 spacer and an azide group to enable efficient copper-catalyzed azide-alkyne cycloaddition.
- Provides a 6-FAM fluorophore with Ex 498 nm and Em 532 nm.
- Includes a PEG3 spacer to improve solubility and reduce steric hindrance.
- Azide functionality enables copper-catalyzed azide-alkyne cycloaddition (click chemistry).
- High purity suitable for labeling applications (≈98%).
- Soluble in DMSO at 50 mg/mL; ultrasonic agitation may be recommended.
- Powder stable at -20°C; store solutions frozen for long-term stability.
Medchemexpress LLC Amino-tri-(azide-PEG4-ethoxymethyl)-methane | 99.8% | 1070.20 | 5 MG
Amino-tri-(azide-PEG4-ethoxymethyl)-methane is a multi-arm PEG product, synthesized with high purity of 99.81% to ensure reliable experimental results. This versatile chemical reagent is designed exclusively for research applications.
- High purity, verified at 99.81%.
- Features a multi-arm polyethylene glycol structure.
- Available in multiple quantities to suit diverse research requirements.
- Packaged for stable room temperature shipping.
- Accompanied by comprehensive documentation for reference and safety.
Medchemexpress LLC m-PEG4-Tos 100mg | 62921-76-0 | 100 MG
m-PEG4-Tos is a tosylated polyethylene glycol (PEG4) reagent used as a PEG-based PROTAC linker and synthetic building block. It serves as a reactive tosylate for installing a PEG spacer in bifunctional degraders and related small-molecule conjugates. Supplied as a colorless to light yellow liquid at high purity, it is intended for research use and requires cold storage for long-term stability.
- Tosylated PEG4 spacer for efficient nucleophilic substitution.
- High purity (≥98.0% by NMR) suitable for synthesis.
- Colorless to light yellow liquid, simplifies handling and dispensing.
- Available in small synthetic quantities (e.g., 100 MG) for discovery work.
- Recommended cold storage to preserve stability in pure form or in solution.
Bioworld D(+) Galactose, 100 g
An monosaccharidic aldo hexose potentially useful in aging studies. Specifications:High Purity GradeSpecific Rotation (2% water): 79 - 81°Appearance: White PowderBoiling Point : 410.8 °CDensity : 1.5 g/cm3HS Code : 29400090Melting Point: 168-170 °CRTECS Number: LW5490000
![eMolecules Broadpharm / m-PEG-DSPE MW 3000 / 250mg / 672544474 / BP-27069 / 90.000 / / [null] / 850.169 / C45H88NO11P](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502465870.JPG-250.jpg)
eMolecules Broadpharm / m-PEG-DSPE MW 3000 / 250mg / 672544474 / BP-27069 / 90.000 / / [null] / 850.169 / C45H88NO11P
Broadpharm / m-PEG-DSPE MW 3000 / 250mg / 672544474 / BP-27069 / 90.000 / / [null] / 850.169 / C45H88NO11P