Indocyanine Green Impurity 66 CAS CATO-C4X-250366
| CAS No. | CATO-C4X-250366 |
| Molecular Formula | C87H95N4NaO12S4 |
| Molecular Weight | 1539.95 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Indocyanine Green Impurity 66 (CAS CATO-C4X-250366) is a certified pharmaceutical impurity reference standard with the molecular formula C87H95N4NaO12S4 and a molecular weight of 1539.95 g/mol.
Structurally, Indocyanine Green Impurity 66 (C87H95N4NaO12S4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 42.5, corresponding to approximately 42 ring(s) or double-bond equivalent(s). With a molecular weight of 1539.95 g/mol, it falls into the high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), Indocyanine Green Impurity 66 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C87H95N4NaO12S4 |
| Molecular Weight | 1539.95 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 |
| Degree of Unsaturation (DBE) | 42.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 4 |
Related Indocyanine Standards
- Indocyanine Green Impurity 60 (CAS CATO-C4X-250360)
- Indocyanine Green-Succinimidyl Ester (CAS 1622335-40-3)
- Indocyanine Green Impurity 49 (CAS CATO-C4X-250349)
- Indocyanine Green Impurity 1 (CAS CATO-C4X-25031)
- Indocyanine Green Impurity 2 (CAS CATO-C4X-25032)
- Indocyanine Green Impurity 48 (CAS CATO-C4X-250348)
- Indocyanine Green Impurity 3 (CAS CATO-C4X-25033)
- Indocyanine Green Impurity 4 (CAS 1201170-49-1)
Recommended Standards
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