| CAS No. | 1808951-76-9 |
| Molecular Formula | C16H11NO7 |
| Molecular Weight | 329.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 329.26 g/mol gives 5-((4-Carboxyphenyl)carbamoyl)isophthalic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-((4-Carboxyphenyl)carbamoyl)isophthalic acid (CAS 1808951-76-9), molecular formula C16H11NO7 and molecular weight 329.26 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C16H11NO7, 5-((4-Carboxyphenyl)carbamoyl)isophthalic acid contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 329.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 5-((4-Carboxyphenyl)carbamoyl)isophthalic acid 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.
| Molecular Formula | C16H11NO7 |
| Molecular Weight | 329.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 1 |