TAMRA hydrazide, 6-isomer | CAS 2183440-67-5

TAMRA hydrazide, 6-isomer is a reactive TAMRA-based fluorescent hydrazide designed for covalent labeling of carbonyl-containing targets through hydrazone formation. Its bright, red-emitting TAMRA fluorophore is widely used in fluorescence imaging and quantitative fluorescence workflows where stable conjugates are required from aldehyde- or ketone-bearing biomolecules and materials. The hydrazide functionality enables straightforward incorporation into labeling strategies for assay development, microscopy, and flow-based readouts.

1. Carbonyl Biomolecule Labeling

TAMRA hydrazide, 6-isomer is frequently used to fluorescently tag aldehyde- or ketone-functional biomolecules, including oxidized glycans, carbohydrate-containing probes, and carbonylated proteins used in biochemical assays. Researchers employ it to generate fluorescent conjugates for tracking biomolecule binding, monitoring conjugation yields, and visualizing labeled targets in downstream fluorescence imaging experiments. The hydrazide reactivity supports covalent attachment to carbonyl groups, which is valuable for experiments where reversible adsorption or noncovalent staining would compromise signal stability.

2. Fluorescence Microscopy Tracing

TAMRA hydrazide, 6-isomer supports fluorescence microscopy studies requiring red-channel visualization of carbonyl-bearing structures in fixed samples or labeled biomaterials. Common workflows include labeling oxidized biomolecule components prior to cell culture studies, mapping fluorescently tagged extracellular components, and preparing imaging reagents for co-localization experiments with other spectrally distinct dyes. Because TAMRA is readily detected with standard red fluorescence filter sets, the reagent is often integrated into multicolor staining panels for cellular imaging and materials localization studies.

3. Flow Cytometry Conjugate Preparation

TAMRA hydrazide, 6-isomer is used in flow cytometry reagent development to create fluorescently labeled biomolecules that report on binding to cell-associated targets or on the presence of carbonyl-functional moieties on probe constructs. Typical applications include preparing fluorescent conjugates for labeling experiments where the fluorophore must be covalently installed before incubation with cells or bead-based targets. The TAMRA emission supports red fluorescence detection on common cytometers, enabling quantitative measurement of labeling intensity in cell-suspension or bead-suspension formats.

4. Fluorescent Bioassay Reagent Development

TAMRA hydrazide, 6-isomer is also applied in fluorescence-based bioassay development where carbonyl-reactive labeling is used to generate tracer reagents, standards, or detection conjugates. Assay developers use TAMRA labeling to produce fluorescent readouts for binding assays, reagent tracking during assay optimization, and calibration of fluorescence signals in plate-based formats. The covalent hydrazone-forming labeling strategy helps maintain reporter association during washing steps that are common in microplate workflows and imaging-compatible assay protocols.