6-TET NHS Ester | CAS 902171-57-7

6-TET NHS Ester is an N-hydroxysuccinimide (NHS) ester dye intermediate designed for efficient covalent labeling of primary amines under standard bioconjugation conditions. Its activated ester enables direct attachment to lysine residues on proteins and peptides, as well as amino-functionalized biomaterials, supporting fluorescence labeling workflows in molecular imaging and assay development. The TET (tetramethylrhodamine-like) fluorescent labeling format is commonly leveraged when bright, trackable dye conjugates are needed for microscopy, electrophoresis-based readouts, and fluorescence quantification.

1. Protein Lysine Labeling

6-TET NHS Ester is frequently used by bioconjugation specialists to generate fluorescent protein conjugates for binding studies, reagent characterization, and fluorescence-based bioassays. By targeting accessible primary amines on antibodies, enzymes, and carrier proteins, it supports straightforward preparation of labeled reagents used in plate-based fluorescence measurements and imaging experiments where covalent dye attachment is required for reproducible signal generation.

2. Peptide And Oligonucleotide Labeling

6-TET NHS Ester is also applied in workflows that require fluorescent tagging of peptides for structure-function studies and of amino-modified oligonucleotides used in nucleic acid analysis. In these applications, the NHS ester format provides a convenient route to covalently incorporate a TET fluorescent label onto amine-bearing biomolecules, enabling visualization and quantitative readout in fluorescence microscopy, gel-based tracking, and fluorescence imaging of labeled nucleic acid constructs.

3. Biomaterial Surface Functionalization

6-TET NHS Ester is commonly incorporated into biomaterials and surface engineering programs where fluorescent tagging of amino-functionalized polymers, hydrogels, or nanoparticles is needed. Researchers use the NHS ester chemistry to attach the dye to amine-bearing surfaces to create fluorescently traceable materials for coating verification, material localization studies, and microscopy-based tracking of labeled constructs during materials characterization and biomaterials performance testing.

4. Fluorescence Microscopy Tracing

6-TET NHS Ester is used in fluorescence microscopy workflows to prepare labeled biomolecule probes and conjugates that can be followed within experimental imaging contexts. Covalent labeling helps maintain dye association during wash steps and sample handling, supporting quantitative comparisons across imaging experiments where consistent labeling density and stable conjugation are important for tracking distribution and relative abundance of labeled targets.