Cefotiam Impurity 21
Impurity reference standard · Cefotiam
- CAS number
- —
- Molecular formula
- C23H27N11O5S4
- Molecular weight
- 665.79
- Purity
- 95%+
- Appearance
- Pale Yellow Solid
- Storage
- -20℃±5℃
About Cefotiam Impurity 21
Cefotiam Impurity 21 is a specified impurity of Cefotiam. 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 C23H27N11O5S4 and a molecular weight of 665.79, with the two-dimensional structure shown above. Because it shares the Cefotiam scaffold, it is typically used to track process-related and degradation impurities of Cefotiam 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. Recommended storage: -20℃±5℃.
Available from stock in milligram to gram quantities; larger or custom synthesis requirements are quoted on request.
Other Cefotiam impurities
The same parent compound, neighbouring impurity numbers.
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