3,5,3'-Triiodo-DL-thyronine is a halogenated, non-proteinogenic thyronine derivative featuring a diphenyl ether core with three iodine substituents and a side-chain carboxylic acid characteristic of amino-acid-like structures. The molecule contains an amino group and a carboxyl functional group, and the name indicates a DL stereochemical form, while the multiple aryl iodines increase molecular mass and provide distinct sites for iodine-dependent spectroscopic and analytical behavior. In biochemical and chemical research, it is used as a defined labeled/iodinated thyronine analogue for studying iodine substitution effects, supporting analytical method development (e.g., mass spectrometry or radiochemical-compatible workflows), and serving as a substrate or reference material in structure-activity and binding-assay contexts where thyronine-like scaffolds are required.
CAT No: CP19403
3,5,3'-Triiodo-DL-thyronine is an iodinated thyronine derivative used as a defined reference material and synthetic intermediate in thyroid hormone-related chemical biology and analytical workflows. The DL stereochemistry provides a racemic mixture, which is commonly leveraged when the goal is quantitative measurement, method development, or downstream derivatization rather than stereospecific biological interpretation. With its multiple iodine atoms on the thyronine scaffold, this compound is well suited to LC-MS and related analytical strategies that rely on characteristic mass and isotopic patterns for accurate identification and calibration.
1. Thyroid Hormone Analytics
3,5,3'-Triiodo-DL-thyronine is widely used by analytical chemistry teams developing and validating assays for iodothyronines in complex matrices such as serum, tissue extracts, and extraction blanks. Researchers use it as a chemical standard to support retention-time assignment and mass-based identification in LC-MS workflows, including targeted methods where iodine-rich thyronine scaffolds provide strong, distinctive signals. In method development and troubleshooting, the racemic (DL) form is often selected when the analytical objective is robust quantitation of total analyte signal rather than stereospecific separation.
2. Stable Isotope-Based Method Development
3,5,3'-Triiodo-DL-thyronine supports quantitative mass spectrometry method development and calibration strategies for thyroid hormone profiling, including experiments that incorporate isotope-labeled analogs as internal standards. In practice, laboratories use the non-labeled iodothyronine to evaluate extraction recovery, matrix effects, and calibration linearity across relevant concentration ranges. The high iodine content also makes it a practical anchor compound for tuning ionization and detection parameters for thyronine-class analytes, improving confidence in downstream quantitative comparisons.
3. Pharmaceutical Intermediate Synthesis
3,5,3'-Triiodo-DL-thyronine is employed in pharmaceutical intermediate development where iodinated thyronine scaffolds serve as precursors for further functionalization and analog generation. Medicinal chemistry and process development groups use it to access defined iodine substitution patterns on the thyronine core, enabling subsequent transformations toward target-specific analogs or derivatized intermediates used in SAR studies. Its role in industrial and R&D settings is typically as a controlled starting material for building more complex iodinated structures with consistent composition for downstream characterization.
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