Levothyroxine Impurity 40
Impurity reference standard · Levothyroxine
- CAS number
- —
- Molecular formula
- C13H16INO4
- Molecular weight
- 377.17
- Purity
- 95%+
About Levothyroxine Impurity 40
Levothyroxine Impurity 40 is a specified impurity of Levothyroxine. It has no single publicly registered CAS number, so it is defined by the structure and molecular formula below.
The compound is characterised by its molecular formula C13H16INO4 and a molecular weight of 377.17, with the two-dimensional structure shown above. Because it shares the Levothyroxine scaffold, it is typically used to track process-related and degradation impurities of Levothyroxine during method development, forced degradation and stability studies.
Each pack ships with a certificate of analysis reporting purity of 95%+ together with the supporting analytical data — HNMR, MS and HPLC or GC traces — so the material can be released straight into your own QC workflow.
Available from stock in milligram to gram quantities; larger or custom synthesis requirements are quoted on request.
Other Levothyroxine impurities
The same parent compound, neighbouring impurity numbers.
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