2-(5-Chloro-2-methoxyphenyl)-1,3-dioxoisoindoline-5-carboxylic acid CAS 690967-38-5
| CAS No. | 690967-38-5 |
| Molecular Formula | C16H10ClNO5 |
| Molecular Weight | 331.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(5-Chloro-2-methoxyphenyl)-1,3-dioxoisoindoline-5-carboxylic acid (CAS 690967-38-5), molecular formula C16H10ClNO5 and molecular weight 331.71 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C16H10ClNO5, 2-(5-Chloro-2-methoxyphenyl)-1,3-dioxoisoindoline-5-carboxylic acid contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 331.71 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures 2-(5-Chloro-2-methoxyphenyl)-1,3-dioxoisoindoline-5-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H10ClNO5 |
| Molecular Weight | 331.71 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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