Organosulfur Compounds
Medchemexpress LLC 4-azido-2,2,6,6-tetramethyl-1-piperidinyloxy | 63697-61-0 | MFCD16659950 | 99.4% | 197.26 g/mol | C9H17N4O | 10 MG
N3-TEMPO is an azide-functionalized TEMPO derivative used to introduce a nitroxide spin label via click chemistry. It participates in copper-catalyzed azide-alkyne cycloaddition (CuAAC) and strain-promoted azide-alkyne cycloaddition (SPAAC), enabling efficient conjugation and labeling of biomolecules. The compound is supplied as a high-purity solid for research applications.
- Azide-functionalized TEMPO for click chemistry.
- Reacts in CuAAC and SPAAC for efficient conjugation.
- Introduces a stable nitroxide spin label for EPR and probing studies.
- High purity suitable for research-grade applications.
- Solid form for convenient storage and handling.
- Useful for labeling proteins, nucleic acids, lipids, and small molecules.
Sigma Aldrich Fine Chemicals Biosciences Fluorescein isothiocyanate5G
Dextran is a polymer of anhydroglucose. It is composed of approximately 95% alpha-D-(166) linkages. The remaining (163) linkages account for the branching of dextran. Conflicting data on the branch lengths implies that the average branch length is less than three glucose units. However other methods indicate branches of greater than 50 glucose units exist. Native dextran has been found to have a molecular weight (MW) in the range of 9 million to 500 million. Lower MW dextrans will exhibit slightly less branching and have a more narrow range of MW distribution. Dextrans with MW greater than 10 000 behave as if they are highly branched. As the MW increases dextran molecules attain greater symmetry. Dextrans with MW of 2 000 to 10 000 exhibit the properties of an expandable coil. At MW below 2 000 dextran is more rod-like. The MW of dextran is measured by one or more of the following methods low angle laser light scattering size exclusion chromatography copper-complexation and anthr
