Protein Modification Reagents
Cayman Chemical dPE-PEG 2000 Cynur 500ug
A PEGylated form of DSPE; has been used in the generation of LNPs for the delivery of miRNA in vitro; LNPs containing DSPE-PEG(2000) cyanur, encapsulating let-7a miRNA, and conjugated to ephrin-A1 reduce the proliferation and colony formation and size of NCI H2081, NCI 5380, and A549 cancer cells, as well as reduce migration of NCI 5380 cells in a wound healing assay
Medchemexpress LLC 4,7,10,13,16-pentaoxanonadec-18-ynoic acid, 2,5-dioxo-1-pyrrolidinyl ester | 1393330-40-9 | MFCD22574798 | 98.0% | 401.41 g/mol | C18H27NO9 | 25 MG
Propargyl-PEG5-NHS ester is an alkyne-terminated polyethylene glycol (PEG5) N-hydroxysuccinimidyl (NHS) ester used as a bioconjugation linker for click chemistry and amine-coupling reactions. It provides an alkyne handle and a PEG5 spacer to improve solubility and control linker length in conjugates.
- Introduces an alkyne handle for copper-catalyzed azide-alkyne cycloaddition.
- Provides a PEG5 spacer to enhance solubility and reduce steric hindrance.
- Features a reactive NHS ester for efficient coupling to primary amines.
- Characterized by NMR with reported purity of 98.0%.
- Has molecular weight 401.41 g/mol and formula C18H27NO9.
Broadpharm Fmoc-N-amido-PEG4-acid.CAS:557756-85-1.Formula: C26H33NO8
Fmoc-N-amido-PEG4-acid.CAS:557756-85-1.Formula: C26H33NO8
eMolecules 658858-65-2 | THP-PEG9 | Broadpharm | MFCD29764333 | 454.557 | C21H42O10 | 98.000 | OCCOCCOCCOCCOCCOCCOCCOCCOC1CCCCO1 | 1g | 303671227
THP-PEG9 | Broadpharm | 658858-65-2 | MFCD29764333 | 454.557 | C21H42O10 | 98.000 | OCCOCCOCCOCCOCCOCCOCCOCCOC1CCCCO1 | 1g | 303671227
STA PHARMACEUTICAL US LLC Fmoc-N-amido-PEG-9-COOH | 1 g | CAS 1191064-81-9 | MDL MFCD28385470
Fmoc-N-amido-PEG-9-COOH is a Amino Acid reagent (Subcategory: PEG AA) sold by WuXi TIDES. Offered in 1 g. Store at 4 °C. SDS available for reference.
Specifications
- CAS: 1191064-81-9
- MDL: MFCD28385470
- InChIKey: NEESTRVILHNOJT-UHFFFAOYSA-N
- Molecular Weight: 707.814
- Molecular Formula: C36H53NO13
- Purity: ≥95%
- Container Type: 15 mL HDPE
- Pack Size: 1 g
- Net Weight: 1 g
- Gross Weight: 7.8 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: 1-(9H-fluoren-9-yl)-3-oxo-2,7,10,13,16,19,22,25,28,31-decaoxa-4-azatetratriacontan-34-oic acid
- SMILES: O=C(CCOCCOCCOCCOCCOCCOCCOCCOCCOCCNC(OCC1C2=CC=CC=C2C3=CC=CC=C31)=O)O
eMolecules 518044-41-2 | Mal-PEG4-CH2CH2COOH | Acrotein ChemBio Inc. | MFCD18916986 | 345.348 | C15H23NO8 | 97 | OC(=O)CCOCCOCCOCCOCCN1C(=O)C=CC1=O | 1g | 487537367
Mal-PEG4-CH2CH2COOH | Acrotein ChemBio Inc. | 518044-41-2 | MFCD18916986 | 345.348 | C15H23NO8 | 97.000 | OC(=O)CCOCCOCCOCCOCCN1C(=O)C=CC1=O | 1g | 487537367
eMolecules Fluorescein-PEG6-Amine | Broadpharm |713.800 | C35H43N3O11S | 98.000 | NCCOCCOCCOCCOCCOCCOCCNC(=S)Nc1ccc2c(c1)C(=O)OC21c2ccc(O)cc2Oc2cc(O)ccc12 | 10mg | 533795517
Fluorescein-PEG6-Amine | Broadpharm |713.800 | C35H43N3O11S | 98.000 | NCCOCCOCCOCCOCCOCCOCCNC(=S)Nc1ccc2c(c1)C(=O)OC21c2ccc(O)cc2Oc2cc(O)ccc12 | 10mg | 533795517
![Medchemexpress LLC 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[poly(ethylene glycol)-1000]-fluorescein | 1000788-53-3 | 95.0% | 25 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000281136.png-250.jpg)
Medchemexpress LLC 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[poly(ethylene glycol)-1000]-fluorescein | 1000788-53-3 | 95.0% | 25 MG
DSPE-PEG-FITC (MW 1000) is a fluorescein-labeled PEGylated phospholipid designed for incorporation into liposomes, micelles, and nanoparticle formulations for fluorescent tracking. The construct combines a distearoyl phosphoethanolamine lipid anchor with a poly(ethylene glycol) spacer terminating in fluorescein; typical purity is 95% (CAS 1000788-53-3).
- Enables fluorescent labeling of liposomes and nanoparticles for imaging and tracking.
- Incorporates stably into lipid bilayers via a distearoyl phosphoethanolamine anchor.
- Poly(ethylene glycol) spacer reduces nonspecific interactions and improves circulation.
- Fluorescein provides bright green fluorescence compatible with microscopy and flow cytometry.
- Supplied in research-scale quantities suitable for formulation and analytical work.
eMolecules 872340-65-3 | Amino-PEG20-t-butyl ester | Broadpharm | MFCD21363262 | 1026.262 | C47H95NO22 | 90.000 | CC(C)(C)OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCN | 500mg | 550804579
Amino-PEG20-t-butyl ester | Broadpharm | 872340-65-3 | MFCD21363262 | 1026.262 | C47H95NO22 | 90.000 | CC(C)(C)OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCN | 500mg | 550804579
Medchemexpress LLC DBCO-PEG8-NHS ester | 2553412-88-5 | 98.3% | C42H55N3O14 | 50 MG
DBCO-PEG8-NHS ester is a PEG-based PROTAC linker utilized in the synthesis of PROTACs. It functions as a click chemistry reagent, containing a DBCO group that enables strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules possessing azide groups. This product is intended for research use only.
- PEG-based PROTAC linker
- Click chemistry reagent
- Features a DBCO group for SPAAC with azide-containing molecules
- Used in the synthesis of PROTACs
Medchemexpress LLC Biotin-PEG4-amide-C6-azide | 1006592-62-6 | MFCD30478293 | 99.1% | C27H49N7O7S | 10MG
Biotin-PEG4-amide-C6-azide is a biotinylated PEG4 amide linker terminating in an azide group, formulated as a high-purity research reagent for click chemistry and bioconjugation. It is suitable for linker assembly, affinity capture, and labeling workflows, and is soluble in DMSO and common co-solvent systems.
- High purity suitable for analytical and preparative applications.
- Terminal azide enables copper-catalyzed azide-alkyne cycloaddition for efficient conjugation.
- PEG4 spacer provides flexibility and improved aqueous solubility.
- Soluble in DMSO and compatible with typical in vivo co-solvent formulations.
- Well suited for affinity capture, labeling, and linker assembly workflows.
Broadpharm TRI-(PROPARGYL-PEG2-ETHOXY 100
Tri-(Propargyl-PEG2-ethoxymethyl)-methane-amido-PEG3-carboxylate 100mg
eMolecules 2523025-41-2 | Tri(Amino-PEG4-amide)-amine | Broadpharm | MFCD28142445 | 888.111 | C39H81N7O15 | 0.000 | NCCOCCOCCOCCOCCC(=O)NCCN(CCNC(=O)CCOCCOCCOCCOCCN)CCNC(=O)CCOCCOCCOCCOCCN | 500mg | 393649486
Tri(Amino-PEG4-amide)-amine | Broadpharm | 2523025-41-2 | MFCD28142445 | 888.111 | C39H81N7O15 | 0.000 | NCCOCCOCCOCCOCCC(=O)NCCN(CCNC(=O)CCOCCOCCOCCOCCN)CCNC(=O)CCOCCOCCOCCOCCN | 500mg | 393649486
Medchemexpress LLC Mal-amido-PEG4-NHS ester | 756525-99-2 | MFCD11041113 | >98.0% | 513.50 | C22H31N3O11 | 250 MG
Mal-amido-PEG4-NHS ester is a polyethylene glycol (PEG)-based bifunctional linker combining a maleimide group and an N-hydroxysuccinimide (NHS) ester. It is used in PROTAC synthesis and general bioconjugation to enable orthogonal coupling strategies: the maleimide reacts with thiols, while the NHS ester couples to amines. The short PEG4 spacer improves aqueous solubility and helps minimize steric hindrance during conjugation.
- Bifunctional maleimide and NHS ester for orthogonal conjugation
- PEG4 spacer increases solubility in aqueous media
- Enables thiol-selective and amine-selective coupling reactions
- Well-suited for PROTAC linker assembly and bioconjugation workflows
- Supplied with analytical documentation for research use