Protein Modification Reagents
Cayman Chemical ANTIBODY DBCO-amIn 500mg
A copper-free click chemistry reagent; has been used in the synthesis of clickable fluorescent probes
Medchemexpress LLC Biotinyl-NH-PEG3-C3-amido-C3-COOH | 1202761-21-4 | 99.3% | 50 MG
Biotinyl-NH-PEG3-C3-amido-C3-COOH is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. It is for research use only and not sold to patients.
- Solid appearance
- White to off-white color
- Soluble in DMSO (250 mg/mL)
- Soluble in methanol (≥ 100 mg/mL)
- Molecular weight: 560.70
- Molecular formula: C25H44N4O8S
eMolecules 811442-84-9 | t-Boc-N-amido-PEG4-amine | Broadpharm | MFCD16619339 | 336.429 | C15H32N2O6 | 98.000 | CC(C)(C)OC(=O)NCCOCCOCCOCCOCCN | 10g | 893909426
t-Boc-N-amido-PEG4-amine | Broadpharm | 811442-84-9 | MFCD16619339 | 336.429 | C15H32N2O6 | 98.000 | CC(C)(C)OC(=O)NCCOCCOCCOCCOCCN | 10g | 893909426
![Medchemexpress LLC 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[folate(polyethylene glycol)-5000] | 1236288-25-7 | 95.7% | 5,000 Da (average) | C63H104N9O15P | 100 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000281151.png-250.jpg)
Medchemexpress LLC 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[folate(polyethylene glycol)-5000] | 1236288-25-7 | 95.7% | 5,000 Da (average) | C63H104N9O15P | 100 MG
DSPE-PEG-Folate, MW 5000 is a folic acid-conjugated PEGylated phospholipid used to introduce folate targeting to liposomes, micelles, and other lipid-based formulations. The amphiphilic conjugate displays folate on particle surfaces for receptor-mediated uptake and provides PEG-based steric stabilization for improved circulation and colloidal stability.
- Facilitates targeting to folate receptor-expressing cells
- Incorporates into lipid bilayers and micelles
- Adds PEG steric stabilization to nanoparticle surfaces
- Suitable for receptor-mediated uptake and targeted delivery research
- Available in multiple pack sizes for research use
Avanti Polar Lipids DSPE-PEG(2000) BIOTIN 1,2-50MG
DSPE-PEG(2000) Biotin1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[biotinyl(polyethylene glycol)-2000] (ammonium salt), 50MG
Broadpharm Biotin-PEG2-azide | 1910803-72-3 | MFCD26142991 | 500mg
Biotin-PEG2-azide | Putity: 98% | MW: 400.5 | 1910803-72-3 | MFCD26142991 | 500mg
Medchemexpress LLC 4-Arm PEG-SCM MW 20 100mg
4-Arm PEG-SCM (MW 20000) is a multi-arm PEG derivative that can be used for peptide modification and drug delivery[1]
STA PHARMACEUTICAL US LLC Azide-PEG3-L-alanine-Fmoc | 50 g | CAS 2054345-69-4 | InChIKey YTHKPQSMRZQREU-JOCHJYFZSA-N
Azide-PEG3-L-alanine-Fmoc is a Amino Acid reagent (Subcategory: Azido/Alkynyl AA) sold by WuXi TIDES. Offered in 50 g. Store at 4 °C. SDS available for reference.
Specifications
- CAS: 2054345-69-4
- MDL: No data
- InChIKey: YTHKPQSMRZQREU-JOCHJYFZSA-N
- Molecular Weight: 484.509
- Molecular Formula: C24H28N4O7
- Purity: ≥95%
- Container Type: 250 mL HDPE
- Pack Size: 50 g
- Net Weight: 50 g
- Gross Weight: 89.8 g
- Commodity Code: 29299090
- Country Of Origin: China
- IUPAC: N-(((9H-fluoren-9-yl)methoxy)carbonyl)-O-(2-(2-(2-azidoethoxy)ethoxy)ethyl)-D-serine
- SMILES: O=C(N[C@H](COCCOCCOCCN=[N+]=[N-])C(O)=O)OCC1C2=C(C=CC=C2)C3=C1C=CC=C3
eMolecules 77544-68-4 | PEG3-Tos | Broadpharm | MFCD22574797 | 260.300 | C11H16O5S | 98.000 | Cc1ccc(cc1)S(=O)(=O)OCCOCCO | 10g | 550803903
PEG3-Tos | Broadpharm | 77544-68-4 | MFCD22574797 | 260.300 | C11H16O5S | 98.000 | Cc1ccc(cc1)S(=O)(=O)OCCOCCO | 10g | 550803903
Chemscene ChemScene | Azido-PEG2-C2-acid | 5G | CS-0114500 | 0.97 | 1312309-63-9| MFCD20926378 | 203.2
ChemScene | Azido-PEG2-C2-acid | 5G | CS-0114500 | 0.97 | 1312309-63-9| MFCD20926378 | 203.2
Medchemexpress LLC N3-PEG11-CH2CH2Br | 2098982-00-2 | MFCD32696701 | 99.8% | 634.56 g/mol | C24H48BrN3O11 | 50 MG
N3-PEG11-CH2CH2Br is a polyethylene glycol (PEG11) linker with an azide (N3) terminus and a bromide-functionalized ethylene spacer. It is a hydrophilic, viscous liquid used in bioconjugation and click-chemistry workflows to improve aqueous solubility and provide a reactive bromide handle for further modification.
- Azide-terminated PEG11 linker for click chemistry.
- Bromide-functionalized ethylene spacer provides a reactive handle.
- Hydrophilic PEG spacer increases solubility in aqueous media.
- High purity suitable for research applications.
- Recommended storage conditions maintain stability.
Medchemexpress LLC Dbco-PEG4-Val-Cit-PAB-MMAF | 2244602-23-9 | 98.7% | 1672.01 | C88H126N12O20 | 10 MG
DBCO-PEG4-Val-Cit-PAB-MMAF is a cleavable ADC linker-payload conjugate that pairs a DBCO-functionalized PEG4 Val-Cit-PAB linker with the tubulin inhibitor MMAF. It is provided as a solid for use in antibody-drug conjugate synthesis and copper-free click chemistry (SPAAC) with azide-containing biomolecules. The Val-Cit-PAB spacer is designed for cathepsin-mediated cleavage to release the payload under lysosomal conditions.
- Cleavable Val-Cit-PAB spacer for enzymatic release.
- DBCO handle for copper-free click (SPAAC) conjugation.
- Hydrophilic PEG4 spacer improves solubility and flexibility.
- High reported purity suitable for research conjugation workflows.
- Available in small milligram pack sizes for lab-scale synthesis.
Medchemexpress LLC m-PEG15-NHS ester | 98.0% | 50 MG
m-PEG15-NHS ester is a PEG-based PROTAC linker designed for use in the synthesis of PROTACs. PROTACs consist of two distinct ligands connected by a linker, one targeting an E3 ubiquitin ligase and the other a target protein. This mechanism allows PROTACs to leverage the intracellular ubiquitin-proteasome system for selective degradation of target proteins.
- PEG-based PROTAC linker
- Used in the synthesis of PROTACs
Medchemexpress LLC Methyltetrazine-PEG8-NHS ester | 2183440-34-6 | MFCD31580145 | 99.3% | C32H47N5O13 | 10MG
Methyltetrazine-PEG8-NHS ester is a PEG-based linker bearing a methyltetrazine group and an N-hydroxysuccinimide (NHS) activated ester. It enables rapid bioorthogonal conjugation via inverse electron-demand Diels-Alder chemistry on the tetrazine side and efficient amine coupling through the NHS ester, making it suitable for PROTAC assembly and general bioconjugation in research applications.
- Methyltetrazine reactive handle enables fast bioorthogonal cycloaddition.
- NHS ester allows straightforward amine conjugation under mild conditions.
- PEG8 spacer improves aqueous solubility and reduces steric hindrance.
- High purity supports reliable synthetic and bioconjugation workflows.
- Compatible with linker assembly and PROTAC synthesis workflows.