Protein Modification Reagents
Medchemexpress LLC Cy5-PEG3-endo-BCN | 1881221-50-6 | 98.4% | 869.57 | C51H69ClN4O6 | 10 MG
Cy5-PEG3-endo-BCN is a Cyanine 5 dye derivative containing a three-unit polyethylene glycol spacer and an endo-BCN reactive group. Supplied as a purple to purplish-red solid for research use, it is designed for bioorthogonal labeling of azide-containing biomolecules via catalyst-free strain-promoted azide-alkyne cycloaddition.
- Dye derivative with PEG3 spacer to improve solubility in aqueous media.
- Endo-BCN functional group enables catalyst-free click chemistry labeling.
- High purity suitable for sensitive fluorescence labeling applications.
- Purple solid appearance for easy visual confirmation.
- Recommended storage under inert atmosphere at low temperatures.
- Available in small milligram pack sizes for laboratory research.
STA PHARMACEUTICAL US LLC Fmoc-amino-PEG3-CH2COOH | 50 g | CAS 139338-72-0 | MDL MFCD13182400
Fmoc-amino-PEG3-CH2COOH is a Amino Acid reagent (Subcategory: PEG AA) sold by WuXi TIDES. Offered in 50 g. Store at 4 °C. SDS available for reference.
Specifications
- CAS: 139338-72-0
- MDL: MFCD13182400
- InChIKey: XNOJSAOJCBOZTA-UHFFFAOYSA-N
- Molecular Weight: 429.469
- Molecular Formula: C23H27NO7
- Purity: ≥95%
- Container Type: 250 mL HDPE
- Pack Size: 50 g
- Net Weight: 50 g
- Gross Weight: 89.8 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: 1-(9H-fluoren-9-yl)-3-oxo-2,7,10,13-tetraoxa-4-azapentadecan-15-oic acid
- SMILES: O=C(COCCOCCOCCNC(OCC1C2=CC=CC=C2C3=CC=CC=C31)=O)O
Creative Pegworks mPEG-OH, MW 2k | 9004-74-4 | MFCD00084416 | 50g
mPEG-OH, MW 2k | 9004-74-4 | MFCD00084416 | 50g
STA PHARMACEUTICAL US LLC Fmoc-NH-PEG24-CH2CH2COOH | 100 g | CAS 2170484-59-8 | MDL MFCD11041159
Fmoc-NH-PEG24-CH2CH2COOH is a Amino Acid reagent (Subcategory: PEG AA) sold by WuXi TIDES. Offered in 100 g. Store at 4 °C. SDS available for reference.
Specifications
- CAS: 2170484-59-8
- MDL: MFCD11041159
- InChIKey: NFOMZHGRFWXDGH-UHFFFAOYSA-N
- Molecular Weight: 1368.609
- Molecular Formula: C66H113NO28
- Purity: ≥95%
- Container Type: 500 mL HDPE
- Pack Size: 100 g
- Net Weight: 100 g
- Gross Weight: 160.5 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: 1-(9H-fluoren-9-yl)-3-oxo-2,7,10,13,16,19,22,25,28,31,34,37,40,43,46,49,52,55,58,61,64,67,70,73,76-pentacosaoxa-4-azanonaheptacontan-79-oic acid
- SMILES: OC(CCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCNC(OCC1C2=C(C=CC=C2)C3=C1C=CC=C3)=O)=O
Medchemexpress LLC BCN-endo-PEG2-maleimide | 2675364-08-4 | 98.1% | 475.53 | C24H33N3O7 | 25 MG
A bifunctional linker reagent containing an endo-bicyclononyne reactive group and a maleimide separated by a PEG2 spacer, designed for strain-promoted azide-alkyne cycloaddition and thiol conjugation in bioconjugation and drug-delivery workflows.
- Contains endo-bicyclononyne and maleimide reactive groups.
- Peg2 spacer provides flexibility and solubility.
- Enables catalyst-free strain-promoted azide-alkyne cycloaddition (SPAAC) with azides.
- Compatible with maleimide-mediated thiol conjugation.
- High purity and defined molecular weight for reproducible conjugation.
Medchemexpress LLC Biotin-PEG4-Amide-C6-Azide | 1006592-62-6 | 99.1% | C27H49N7O7S | 50 MG
Biotin-PEG4-Amide-C6-Azide | 1006592-62-6 | 99.1% | C27H49N7O7S | 50 MG
Medchemexpress LLC Biotin-PEG4-Amide-C6-Azide | 1006592-62-6 | 99.1% | C27H49N7O7S | 100 MG
Biotin-PEG4-Amide-C6-Azide is a PEG-based PROTAC linker designed for the synthesis of PROTACs. This click chemistry reagent features an Azide group, enabling specific reactions with other molecules.
- PEG-based PROTAC linker
- Used in the synthesis of PROTACs
- Click chemistry reagent
- Contains an azide group
- Undergoes copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc)
- Can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions