Levothyroxine dimer CAS CATO-C4X-167832
| CAS No. | CATO-C4X-167832 |
| Molecular Formula | C30H18I8N2O6 |
| Molecular Weight | 1517.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 1517.71 g/mol gives Levothyroxine dimer distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Levothyroxine dimer (CAS CATO-C4X-167832), molecular formula C30H18I8N2O6 and molecular weight 1517.71 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Levothyroxine dimer (C30H18I8N2O6) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, iodine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C30H18I8N2O6 |
| Molecular Weight | 1517.71 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
Related Levothyroxine Standards
- Levothyroxine EP Impurity F (CAS 911661-90-0)
- Levothyroxine Impurity 11 (CAS CATO-C4X-167811)
- Levothyroxine acyl glucuronide (CAS 909880-81-5)
- Levothyroxine phenolic glucuronide (CAS 21462-56-6)
- Levothyroxine Impurity 57 (CAS CATO-C4X-167857)
- Levothyroxine Impurity 58 (CAS CATO-C4X-167858)
- Levothyroxine Impurity 29（Mixture of Diastereomers） (CAS CATO-C4X-167829)
- Levothyroxine Impurity 50 (CAS CATO-C4X-167850)
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