Indocyanine Green Impurity 18 CAS CATO-C4X-250318

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-250318
Molecular FormulaC15H18N2
Molecular Weight226.32 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Indocyanine Green Impurity 18 CAS CATO-C4X-250318 chemical structure

Description

Indocyanine Green Impurity 18 (C15H18N2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Indocyanine Green Impurity 18 (CAS CATO-C4X-250318) is a certified pharmaceutical impurity reference standard with the molecular formula C15H18N2 and a molecular weight of 226.32 g/mol.

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.

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 FormulaC15H18N2
Molecular Weight226.32 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Nitrogen Atoms2

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