Protein Modification Reagents
Medchemexpress LLC DBCO-PEG4-Biotin | 1255942-07-4 | 99.5% | 25 MG
DBCO-PEG4-Biotin is an azadibenzocyclooctyne-biotin derivative containing a biotin group and 4 PEGs. It is a versatile biotinylation reagent used for introducing a biotin moiety to azide-labeled biomolecules via copper-free strain-promoted alkyne-azide click chemistry (SPAAC) reaction. This reagent contains a DBCO group that can undergo SPAAC with molecules containing azide groups.
- Azadibenzocyclooctyne-biotin derivative
- Contains a biotin group and 4 PEGs
- Versatile biotinylation reagent
- Introduces a biotin moiety to azide-labeled biomolecules
- Uses copper-free strain-promoted alkyne-azide click chemistry (SPAAC) reaction
- DBCO group can undergo SPAAC with molecules containing azide groups
Medchemexpress LLC 3,6,9,12,15,18-hexaoxanonadecanoic acid | 16142-03-3 | MFCD30536160 | 99.9% | 310.34 | C13H26O8 | 50 MG
m-PEG5-CH2COOH is a monodisperse PEG linker terminating in a carboxylic acid, designed for use as a non-cleavable linker in antibody-drug conjugates and as a PEG-based linker in PROTAC synthesis.
- Terminal carboxylic acid (-CH2COOH) for straightforward amide coupling to amines.
- PEG5 spacer provides hydrophilicity and flexibility to linker arms.
- High reported purity (99.9%) suitable for research-grade bioconjugation.
- Monodisperse molecular weight 310.34 and formula C13H26O8 for predictable behavior.
- Available in small, research-friendly package sizes such as 50 mg.
Medchemexpress LLC Propargyl-PEG6-N3 | 1198080-03-3 | MFCD31561110 | >98.0% | C15H27N3O6 | 10MG
Propargyl-PEG6-N3 is a PEG-based linker that contains an azide and a terminal propargyl (alkyne) group, designed for click chemistry and bioconjugation. It is used as a spacer in PROTAC synthesis and in the modular assembly of labeled biomolecules, and should be stored per supplier recommendations.
