Protein Modification Reagents
![eMolecules 2839527-02-3 | N-(m-PEG4)-N'-(PEG3-Mal)-Cy5 | Broadpharm | MFCD30182067 | 907.540 | C49H67ClN4O10 | 95.000 | [Cl-].COCCOCCOCCOCC[N+]1=C(\C=C\C=C\C=C2\N(CCOCCOCCOCCNC(=O)CCN3C(=O)C=CC3=O)c3ccccc3C2(C)C)C(C)(C)c2ccccc12 | 1mg | 311074481](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502503365.JPG-250.jpg)
eMolecules 2839527-02-3 | N-(m-PEG4)-N'-(PEG3-Mal)-Cy5 | Broadpharm | MFCD30182067 | 907.540 | C49H67ClN4O10 | 95.000 | [Cl-].COCCOCCOCCOCC[N+]1=C(\C=C\C=C\C=C2\N(CCOCCOCCOCCNC(=O)CCN3C(=O)C=CC3=O)c3ccccc3C2(C)C)C(C)(C)c2ccccc12 | 1mg | 311074481
N-(m-PEG4)-N'-(PEG3-Mal)-Cy5 | Broadpharm | 2839527-02-3 | MFCD30182067 | 907.540 | C49H67ClN4O10 | 95.000 | [Cl-].COCCOCCOCCOCC[N+]1=C(\C=C\C=C\C=C2\N(CCOCCOCCOCCNC(=O)CCN3C(=O)C=CC3=O)c3ccccc3C2(C)C)C(C)(C)c2ccccc12 | 1mg | 311074481
Research Products International Corp PEG 8000, 25 KG
Ultrapure white crystals for molecular biology applications such as precipitation of DNA, nucleic acids, hybridization and fusion of mammalian cells.Melting Point: 55°-60°C
Medchemexpress LLC Phenol-amido-C1-PEG3-N3 | 1096439-18-7 | 99.9% | 324.33 g/mol | C14H20N4O5 | 5 MG
Phenol-amido-C1-PEG3-N3 is an azido-functionalized PEG-based PROTAC linker used as a building block in targeted protein degradation research and medicinal chemistry. Provided as a liquid with a light brown appearance, it offers high purity and defined molecular properties suitable for synthesis workflows and click-chemistry conjugation.
- High purity approx. 99.9%.
- Molecular formula C14H20N4O5, molecular weight 324.33 g/mol.
- Azido functional group enables CuAAC and SPAAC click reactions.
- Supplied as a liquid, color light brown to brown.
- Storage: pure form at -20°C; in solvent at -80°C for extended stability.
- Available in small research pack sizes for medicinal chemistry workflows.
Cayman Chemical VH 032 LInker 2 25mg
A VHL Ligand 1 derivative; comprises the VHL ligand domain and PEG linker of the BET inhibitor-containing PROTACs MZ2 and MZP-55
Medchemexpress LLC DSPE-PEG-FITC | 1000788-53-3 | 98.1% | 5000 Da (average) | 10 MG
DSPE-PEG-FITC (MW 5000) is a fluorescein-conjugated polyethylene glycol (PEG) lipid amphiphile designed for fluorescent labeling of liposomes, nanoparticles, and biological samples. It combines a DSPE lipid anchor with an FITC-labeled PEG chain to provide stable fluorescence for imaging and tracking applications. Supplied as a light yellow solid, handle and store per manufacturer guidance.
- Provides fluorescein (FITC) fluorescence for detection and imaging.
- Average PEG molecular weight ≈ 5,000 Da.
- Amphiphilic PEG-lipid suitable for incorporation into liposomes and micelles.
- High purity suitable for research use.
- Light yellow solid physical form for easy handling.
- Storage recommendations available for powder and solutions.
eMolecules 1415800-32-6 | Propargyl-PEG4-acid | Broadpharm | MFCD22683284 | 260.286 | C12H20O6 | 0.000 | OC(=O)CCOCCOCCOCCOCC#C | 1g | 200183276
Propargyl-PEG4-acid | Broadpharm | 1415800-32-6 | MFCD22683284 | 260.286 | C12H20O6 | 0.000 | OC(=O)CCOCCOCCOCCOCC#C | 1g | 200183276
Medchemexpress LLC Tamra alkyne, 5-isomer | 945928-17-6 | 96.6% | 467.52 g/mol | C28H25N3O4 | 5 MG
TAMRA alkyne, 5-isomer is an alkyne-derivatized tetramethylrhodamine (TAMRA) fluorescent dye designed for click chemistry labeling. It permits efficient conjugation to azide- or DBCO/BCN-containing molecules and is commonly used for in-gel fluorescence detection, enrichment, and identification of labeled proteins.
Medchemexpress LLC NH-bis-PEG4 | 63721-14-2 | 98.0% | C16H35NO8 | 1 G
NH-bis-PEG4 is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. This product is intended for research use only. It is designed to facilitate the targeted degradation of proteins by exploiting the ubiquitin-proteasome system.
- Used in the synthesis of PROTACs
- PEG-based linker design
- Facilitates selective degradation of target proteins
- Intended for research applications
![eMolecules 596820-83-6 | 9-Biotinylamino-4,7-dioxanonanoic acid n-hydroxysuccinimidyl ester | Combi-Blocks | MFCD11974976 | 500.570 | C21H32N4O8S | 97.000 | O=C(CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12)NCCOCCOCCC(=O)ON1C(=O)CCC1=O | 250mg | 439373449](https://assets.fishersci.com/TFS-Assets/CCG/product-images/NC1688706.jpg-250.jpg)
eMolecules 596820-83-6 | 9-Biotinylamino-4,7-dioxanonanoic acid n-hydroxysuccinimidyl ester | Combi-Blocks | MFCD11974976 | 500.570 | C21H32N4O8S | 97.000 | O=C(CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12)NCCOCCOCCC(=O)ON1C(=O)CCC1=O | 250mg | 439373449
9-Biotinylamino-4,7-dioxanonanoic acid n-hydroxysuccinimidyl ester | Combi-Blocks | 596820-83-6 | MFCD11974976 | 500.570 | C21H32N4O8S | 97.000 | O=C(CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12)NCCOCCOCCC(=O)ON1C(=O)CCC1=O | 250mg | 439373449
Medchemexpress LLC Dm1-peg4-dbco | >98.0% | 1198.79 | C63H80ClN5O16 | 5 MG
DM1-PEG4-DBCO is a drug-linker conjugate that links the cytotoxic maytansinoid DM1 to a DBCO-PEG4-Ahx linker for bioorthogonal strain-promoted alkyne-azide cycloaddition (SPAAC). It is supplied as an off-white to light yellow solid for use in antibody-drug conjugate construction and click-chemistry conjugations.
- Click chemistry reagent with DBCO for SPAAC conjugation to azide-containing molecules.
- Contains DM1, a potent microtubule inhibitor suitable for ADC payloads.
- Soluble in DMSO at 100 mg/mL; requires ultrasonic assistance and fresh DMSO.
- Storage: store at -20°C; in solvent store at -80°C for up to 6 months or -20°C for up to 1 month; protect from light.
- Appearance: off-white to light yellow solid.
Medchemexpress LLC Bi2536-peg2-halo | 99.4% | 790.39 g/mol | C39H60ClN7O8 | 10 MG
A bifunctional chemical probe that links a PLK1 inhibitor to a Halo-tag ligand via a PEG2 spacer, designed for cellular target engagement and imaging studies.
- Combines PLK1 inhibitory activity with Halo-tag targeting.
- High stated purity (99.44%).
- Soluble in DMSO at 100 mg/mL for preparing concentrated stocks.
- Suitable for cellular target validation and imaging of Halo-tag fusion proteins.
- Available in small research pack sizes, including 10 mg, for screening and probe studies.
eMolecules 756526-01-9 | FMOC-NH-PEG12-CH2CH2COOH | MFCD08064302 | 1g
AstaTech | FMOC-NH-PEG12-CH2CH2COOH | 1g | 516650164 | S10746 | 95.000 | 756526-01-9 | MFCD08064302 | 839.973 | C42H65NO16
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