Protein Modification Reagents
Medchemexpress LLC Biotin-PEG4-dialkoxydiphenylsilane-picolyl azide | 2599839-59-3 | 95.0% | C47H67N9O10SSi | 25 MG
Biotin-PEG4-dialkoxydiphenylsilane-picolyl azide is a clickable, acid-cleavable biotin-picolyl azide. It functions as an enrichment handle for cell surface glycoproteins, facilitating protein labeling.
- Clickable, acid-cleavable biotin-picolyl azide
- Functions as an enrichment handle for cell surface glycoproteins
- Suitable for protein labeling
- Azide group enables copper-catalyzed azide-alkyne cycloaddition (CuAAc)
- Participates in ring strain-promoted alkyne-azide cycloaddition (SPAAC)
eMolecules 581065-94-3 | Tos-PEG5 t-butyl ester | Broadpharm | MFCD22574810 | 476.580 | C22H36O9S | 98.000 | Cc1ccc(cc1)S(=O)(=O)OCCOCCOCCOCCOCCC(=O)OC(C)(C)C | 250mg | 353441935
Tos-PEG5 t-butyl ester | Broadpharm | 581065-94-3 | MFCD22574810 | 476.580 | C22H36O9S | 98.000 | Cc1ccc(cc1)S(=O)(=O)OCCOCCOCCOCCOCCC(=O)OC(C)(C)C | 250mg | 353441935
eMolecules 2228857-30-3 | Fmoc-NMe-PEG4-NHS ester | Broadpharm598.649 | C31H38N2O10 | 98.000 | CN(CCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O)C(=O)OCC1c2ccccc2-c2ccccc12 | 250mg | 393649416
Fmoc-NMe-PEG4-NHS ester | Broadpharm | 2228857-30-3598.649 | C31H38N2O10 | 98.000 | CN(CCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O)C(=O)OCC1c2ccccc2-c2ccccc12 | 250mg | 393649416
Medchemexpress LLC Cholesterol-PEG 600 | 69068-97-9 | 1,055.60 g/mol | C68H110O8 | 1 G
Cholesterol-PEG 600 is a cholesterol-terminated polyethylene glycol reagent (average PEG MW ~600) used in life-science research to modify lipid assemblies and improve amphiphilic conjugation. It is supplied as an oil (off-white to light yellow) for formulation into liposomes, nanoparticles, and other delivery systems. For research use only.
Medchemexpress LLC N-hydroxysuccinimide-activated PEG4-Val-Cit-PAB-MMAE | 2762518-86-3 | MFCD09835251 | 98.9% | 1496.78 | C74H117N11O21 | 5 MG
OSu-PEG4-VC-PAB-MMAE is an N-hydroxysuccinimide (OSu) activated PEG4 val-cit-para-aminobenzyl (PAB) linker conjugated to monomethylauristatin E (MMAE). It is supplied as a white to off-white solid for research use in antibody-drug conjugate synthesis and site-specific conjugation.
- Suitable for site-specific conjugation in ADC construction.
- Contains a cleavable val-cit linker and self-immolative PAB spacer.
- Provided as a high-purity solid, facilitating storage and handling.
- Stable when stored at -80°C and protected from light under inert atmosphere.
- Soluble in common organic solvents and DMSO for reaction preparation.
Cayman Chemical TrImethoprIm-PEG-amIntrIfl 1mg
A conjugated form of trimethoprim linked with polyethylene glycol (PEG) amine
eMolecules 2100306-85-0 | N-(PEG1-OH)-N-Boc-PEG2-propargyl | Broadpharm | MFCD30730381 | 331.409 | C16H29NO6 | 98.000 | CC(C)(C)OC(=O)N(CCOCCO)CCOCCOCC#C | 500mg | 347153866
N-(PEG1-OH)-N-Boc-PEG2-propargyl | Broadpharm | 2100306-85-0 | MFCD30730381 | 331.409 | C16H29NO6 | 98.000 | CC(C)(C)OC(=O)N(CCOCCO)CCOCCOCC#C | 500mg | 347153866
Medchemexpress LLC Hs-peg-sh (mw 3400) | 97.0% | 25 MG
HS-PEG-SH (MW 3400) is a linear homobifunctional PEG and a cross-linker, useful for drug delivery and the preparation of PEG hydrogels. It has a molecular weight of 3400 (Average) and appears as a white to light yellow solid. This product is for research use only.
- Linear homobifunctional PEG
- Cross-linker
- Utilized for drug delivery
- Used in the preparation of PEG hydrogels
- White to light yellow solid appearance
- Research use only
Grainger Open End Peg Rack 19.88 L Blue PK6
The Carlisle Open End Peg Rack is a 19-7/8" long metal peg rack with 12 pegs for hanging tools, parts, and other items. It has a durable steel construction with a gray powder coat finish and can hold up to 25 pounds per peg. The pegs have rounded ends and are 1" in diameter, spaced 2" apart. This versatile peg rack can be mounted to walls or workbenches using the included mounting hardware. With its heavy-duty build, it's ideal for workshops, garages, utility rooms, and other storage areas to keep essentials within reach but organized.
eMolecules Mal-PEG3-alcohol | 146551-23-7 | MFCD28142465 | 1g
Broadpharm | Mal-PEG3-alcohol | 1g | 296213748 | BP-22340 | 98.000 | 146551-23-7 | MFCD28142465 | 229.232 | C10H15NO5
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Medchemexpress LLC (S,R,S)-ahpc-peg2-acid | 2172820-09-4 | 98.9% | C30H42N4O8S | 10MG
(S,R,S)-AHPC-PEG2-acid is a PEG-based PROTAC linker that combines an AHPC E3 ligase ligand with a two-unit PEG spacer terminating in a carboxylic acid. Supplied as a high-purity solid research reagent, it is designed for use as a building block in the synthesis of PROTACs and related medicinal chemistry applications.
- PEG2 spacer provides flexibility and improved solubility.
- Terminal carboxylic acid enables standard amide or ester coupling chemistries.
- AHPC ligand facilitates recruitment of E3 ligase for targeted degradation strategies.
- High reported purity supports reliable analytical and synthetic work.
Medchemexpress LLC DSPE-PEG-maleimide (MW 3400) ammonium | ≥95.0% | 3400 g/mol | (C2H4O)nC52H93N3NaO13P | 500 MG
DSPE-PEG-Maleimide (MW 3400) ammonium is a DSPE-based phospholipid conjugated to a polyethylene glycol chain (approx. 3.4 kDa) terminating in a maleimide reactive group. It is used to incorporate reactive PEGylated lipids into liposomes, nanostructured lipid carriers, and other nanoparticle systems to enable thiol-specific conjugation and improve colloidal stability.
eMolecules 1334177-86-4 | Mal-amido-PEG8-C2-acid | Medchem Express (US) | MFCD13184956 | 592.639 | C26H44N2O13 | 98.000 | OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)CCN1C(=O)C=CC1=O | 250mg | 894458958
Mal-amido-PEG8-C2-acid | Medchem Express (US) | 1334177-86-4 | MFCD13184956 | 592.639 | C26H44N2O13 | 98.000 | OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)CCN1C(=O)C=CC1=O | 250mg | 894458958
Medchemexpress LLC DSPE-PEG4-DBCO | 2112738-14-2 | 95.0% | C71H116N3O15P | 25 MG
DSPE-PEG4-DBCO is a PEG-based PROTAC linker utilized in the synthesis of PROTACs. It functions as a click chemistry reagent due to its DBCO group, which facilitates strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups. PROTACs themselves are composed of two distinct ligands connected by a linker: one ligand binds to an E3 ubiquitin ligase, and the other targets a specific protein. These PROTACs leverage the intracellular ubiquitin-proteasome system for the selective degradation of target proteins.
- Peg-based PROTAC linker
- Click chemistry reagent
- Contains a DBCO group for strain-promoted alkyne-azide cycloaddition (SPAAC) with azide-containing molecules
- Used in the synthesis of PROTACs
- PROTACs utilize the ubiquitin-proteasome system for selective protein degradation
Medchemexpress LLC Azido-PEG5-CH2CO2H | 217180-81-9 | 98.9% | 321.33 g/mol | C12H23N3O7 | 50 MG
Azido-PEG5-CH2CO2H is an azido-terminated PEG5 linker with a carboxylic acid terminus used as a cleavable linker in antibody-drug conjugate (ADC) and PROTAC synthesis. The compound is supplied as a liquid with high purity and specific formulation and storage recommendations.
- Cleavable five-unit PEG linker.
- Terminal azide and carboxylic acid functionality.
- Purity: 98.9%.
- Molecular weight: 321.33 g/mol.
- Soluble in DMSO (100 mg/mL); may require sonication and fresh DMSO.
- In vivo formulation protocols report ≥2.5 mg/mL solubility using recommended vehicles.
- Storage: -20°C, protect from light; in solvent: -80°C for 6 months, -20°C for 1 month.