Indigo Carmine Impurity 2
Impurity reference standard · Indigo Carmine
- CAS number
- —
- InChIKey
- RFJUQWIIBNURFG-QDBORUFSSA-L
- Molecular formula
- C16H6N4O10S2 · 2*Na
- Exact mass
- 523.9321 Da
About Indigo Carmine Impurity 2
Indigo Carmine Impurity 2 is a specified impurity of Indigo Carmine. 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 C16H6N4O10S2 · 2*Na, with the two-dimensional structure shown above. Because it shares the Indigo Carmine scaffold, it is typically used to track process-related and degradation impurities of Indigo Carmine during method development, forced degradation and stability studies.
Each pack ships with a certificate of analysis 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.
Frequently asked questions
Does Indigo Carmine Impurity 2 come with a certificate of analysis?
Yes. Every pack ships with a certificate of analysis plus the supporting analytical data — HNMR, MS and HPLC or GC traces.
How is Indigo Carmine Impurity 2 uniquely identified?
The InChIKey RFJUQWIIBNURFG-QDBORUFSSA-L identifies the structure unambiguously, so it can be matched against your own registry or a public database.
Is a structure file available for Indigo Carmine Impurity 2?
Yes. The two-dimensional structure is drawn on this page from the SMILES record, and the SMILES or a molfile can be supplied on request.
What pack sizes are available for Indigo Carmine Impurity 2?
Standard packs run from milligram to gram quantities and ship from stock. Larger or custom synthesis requirements are quoted on request.
Need this standard, or a related one?
Send the compound name, CAS number or a structure file — we confirm availability, pack size and lead time, usually within one business day.