Protein Modification Reagents
![eMolecules 516493-93-9 | Azido-PEG5-amine | Broadpharm | MFCD16619318 | 306.363 | C12H26N4O5 | 0.000 | NCCOCCOCCOCCOCCOCCN=[N+]=[N-] | 1g | 311074551](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502202936.JPG-250.jpg)
eMolecules 516493-93-9 | Azido-PEG5-amine | Broadpharm | MFCD16619318 | 306.363 | C12H26N4O5 | 0.000 | NCCOCCOCCOCCOCCOCCN=[N+]=[N-] | 1g | 311074551
Azido-PEG5-amine | Broadpharm | 516493-93-9 | MFCD16619318 | 306.363 | C12H26N4O5 | 0.000 | NCCOCCOCCOCCOCCOCCN=[N+]=[N-] | 1g | 311074551
![eMolecules 1217609-84-1 | Biotin-PEG4-alcohol | Broadpharm | MFCD03701139 | 419.540 | C18H33N3O6S | 98.000 | OCCOCCOCCOCCNC(=O)CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12 | 1g | 309209152](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502202887.JPG-250.jpg)
eMolecules 1217609-84-1 | Biotin-PEG4-alcohol | Broadpharm | MFCD03701139 | 419.540 | C18H33N3O6S | 98.000 | OCCOCCOCCOCCNC(=O)CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12 | 1g | 309209152
Biotin-PEG4-alcohol | Broadpharm | 1217609-84-1 | MFCD03701139 | 419.540 | C18H33N3O6S | 98.000 | OCCOCCOCCOCCNC(=O)CCCC[C@@H]1SC[C@@H]2NC(=O)N[C@H]12 | 1g | 309209152
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 DSPE-PEG-COOH | 98.1% | 5000 (average) | 10 MG
DSPE-PEG-COOH (MW 5000) is a PEGylated phospholipid used to modify liposome and nanoparticle surfaces to improve solubility, circulation time, and tissue targeting of poorly soluble drugs.
- PEGylated phospholipid with an average molecular weight of 5,000 Da.
- Carboxylic acid terminal group enables covalent conjugation and surface functionalization.
- Enhances colloidal stability and circulation half-life in delivery systems.
- Soluble in DMSO at approximately 100 mg/mL with sonication; hygroscopic DMSO may affect solubility.
- Appearance: white to off-white solid.
- Recommended storage: sealed at -20°C; in solvent store at -80°C for long-term (up to 6 months).
- Reported purity: 98.1%.
Nanocs Thiol carboxylic PEG, HS-PEG-COOH | 100mg
Thiol carboxylic PEG, HS-PEG-COOH | MW: 1000 | 100mg
eMolecules 1393330-40-9 | Propargyl-PEG5-NHS ester | Broadpharm | MFCD22574798 | 401.412 | C18H27NO9 | 98.000 | O=C(CCOCCOCCOCCOCCOCC#C)ON1C(=O)CCC1=O | 5g | 229582899
Propargyl-PEG5-NHS ester | Broadpharm | 1393330-40-9 | MFCD22574798 | 401.412 | C18H27NO9 | 98.000 | O=C(CCOCCOCCOCCOCCOCC#C)ON1C(=O)CCC1=O | 5g | 229582899
eMolecules 105589-77-3 | Tr-PEG3 | Broadpharm | MFCD17926568 | 348.442 | C23H24O3 | 95.000 | OCCOCCOC(c1ccccc1)(c1ccccc1)c1ccccc1 | 1g | 340377176
Tr-PEG3 | Broadpharm | 105589-77-3 | MFCD17926568 | 348.442 | C23H24O3 | 95.000 | OCCOCCOC(c1ccccc1)(c1ccccc1)c1ccccc1 | 1g | 340377176
Medchemexpress LLC DSPE-PEG-maleimide (MW 3400) ammonium | 474922-22-0 | >95.0% | 3,400 Da | (C2H4O)nC52H93N3NaO13P | 50 MG
DSPE-PEG-maleimide (MW 3400) ammonium is a phospholipid-polyethylene glycol conjugate bearing a terminal maleimide reactive group. Supplied as the ammonium salt with a nominal PEG molecular weight of 3,400 Da, it is used to introduce thiol-reactive functionality into lipid assemblies for site-specific conjugation and formulation of PEGylated lipid nanoparticles and nanostructured lipid carriers.
- Provides maleimide functionality for thiol-specific conjugation.
- Anchors into lipid bilayers via DSPE for stable incorporation into liposomes and nanoparticles.
- PEG chain (3,400 Da) imparts steric stabilization and extended circulation.
- Compatible with thiol-containing ligands for targeted conjugation.
- Typically supplied at ≥95% purity; store under dry and low-temperature conditions.
Medchemexpress LLC 2-(2-azidoethoxy)ethyl 4-methylbenzenesulfonate | 182347-24-6 | MFCD27946436 | 99.8% | 285.32 g/mol | C11H15N3O4S | 100 MG
N3-PEG2-Tos (2-(2-azidoethoxy)ethyl 4-methylbenzenesulfonate) is a small polyethylene glycol (PEG) linker bearing an azide functional group and a tosylate leaving group. It is used as a bifunctional building block for introducing an azide handle and for electrophilic substitution during linker and conjugation chemistry. CAS 182347-24-6; molecular weight 285.32 g/mol.
- Provides an azide handle for click chemistry applications.
- Contains a tosylate leaving group for efficient nucleophilic substitution.
- Small PEG spacer improves solubility and linker flexibility.
- Suitable for linker synthesis and bioconjugation workflows.
- Store at -20 °C, protected from light and moisture.
- High purity reported (~99.8%) for research use.
Medchemexpress LLC Dspe-peg-mannose | 1829524-73-3 | 90.0% | 2000 Da (average) | (C2H4O)nC57H102N3O16PS | 10 MG
DSPE-PEG(2000)-Mannose is a mannose-terminated DSPE-PEG lipid conjugate used to prepare mannose-functionalized liposomes and lipid nanoparticles for receptor-mediated targeting. It is intended for research use to enhance targeting of antigen-presenting cells and to improve vaccine or drug delivery performance.
- Lipid-PEG conjugate with a terminal mannose for mannose-receptor targeting.
- Average molecular weight ~2000 Da.
- Purity 90.0%.
- Appearance: white to off-white solid.
- Storage: powder -20°C (3 years); in solvent -80°C (6 months), -20°C (1 month).
- Suitable for constructing mannose-functionalized liposomes and lipid nanoparticles for targeting applications.
- CAS number 1829524-73-3.
Medchemexpress LLC Tos-PEG4-NH-Boc (PROTAC linker 7) | 1246999-33-6 | ≥98.0% | 10 G
Tos-PEG4-NH-Boc (PROTAC Linker 7) is a PEG-based PROTAC linker used in the synthesis of PROTACs. This chemical is intended for research use only.
- Cas number: 1246999-33-6
- Molecular weight: 447.54
- Formula: C20H33NO8S
- Purity: ≥98.0%
eMolecules 1426164-53-5 | Bis-Mal-Lysine-PEG4-TFP ester | Broadpharm | MFCD28385461 | 843.783 | C37H45F4N5O13 | 98.000 | Fc1cc(F)c(F)c(OC(=O)CCOCCOCCOCCOCCNC(=O)C(CCCCNC(=O)CCN2C(=O)C=CC2=O)NC(=O)CCN2C(=O)C=CC2=O)c1F | 1g | 550804185
Bis-Mal-Lysine-PEG4-TFP ester | Broadpharm | 1426164-53-5 | MFCD28385461 | 843.783 | C37H45F4N5O13 | 98.000 | Fc1cc(F)c(F)c(OC(=O)CCOCCOCCOCCOCCNC(=O)C(CCCCNC(=O)CCN2C(=O)C=CC2=O)NC(=O)CCN2C(=O)C=CC2=O)c1F | 1g | 550804185
eMolecules 2055013-52-8 | Tri(Amino-PEG5-amide)-amine | Broadpharm | MFCD28142444 | 1020.270 | C45H93N7O18 | 0.000 | NCCOCCOCCOCCOCCOCCC(=O)NCCN(CCNC(=O)CCOCCOCCOCCOCCOCCN)CCNC(=O)CCOCCOCCOCCOCCOCCN | 500mg | 393649485
Tri(Amino-PEG5-amide)-amine | Broadpharm | 2055013-52-8 | MFCD28142444 | 1020.270 | C45H93N7O18 | 0.000 | NCCOCCOCCOCCOCCOCCC(=O)NCCN(CCNC(=O)CCOCCOCCOCCOCCOCCN)CCNC(=O)CCOCCOCCOCCOCCOCCN | 500mg | 393649485