Thyroxine (T4) is the main hormone secreted into the bloodstream by the thyroid gland. It is the inactive form and most of it is converted to an active form called triiodothyronine by organs such as the liver and kidneys.

Stable isotope labeled Thyroxine (T4) is intended for use as an internal standard for the quantification of Thyroxine (T4) by LC or GC-mass spectrometry.

If the number, nature and/or location of stable isotope label atoms (D, ¹⁵N, ¹³C) in this molecule don’t fit with your application, don’t hesitate to contact us to discuss your specific needs.

Keywords:

Stable isotope labeled active pharmaceutical ingredient (API), stable isotope dilution analysis, internal standard, stable isotope labeled standard (SIL), therapeutic drug monitoring (TDM), quantitative bioanalytical method validation, clinical diagnosis, LC/MS method validation, diagnostic breath test, clinical chemistry, diagnostic tools & biomarkers.

• Molecular Formula: C₉¹³C₆H₁₁I₄NO₄
• Molecular Weight: 782.83 g/mol
• Specification:
  Minimum chemical purity: 95.0 %
  Minimum Isotopic Enrichment: ¹³C ≥99 %
• Solubility: Dimethylsulfoxide (DMSO)
• Packing size: 10mg, 25mg, 50mg
• HS Code: 284590

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