2-((2-Chloro-6-oxo-7,8,9,10-tetrahydro-6h-benzo[c]chromen-3-yl)oxy)acetic acid CAS 326878-33-5
| CAS No. | 326878-33-5 |
| Molecular Formula | C15H13ClO5 |
| Molecular Weight | 308.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-((2-Chloro-6-oxo-7,8,9,10-tetrahydro-6h-benzo[c]chromen-3-yl)oxy)acetic acid is closely related to a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2-((2-Chloro-6-oxo-7,8,9,10-tetrahydro-6h-benzo[c]chromen-3-yl)oxy)acetic acid (CAS 326878-33-5) is a high-purity analytical reference standard with the molecular formula C15H13ClO5 and a molecular weight of 308.71 g/mol.
Structurally, 2-((2-Chloro-6-oxo-7,8,9,10-tetrahydro-6h-benzo[c]chromen-3-yl)oxy)acetic acid (C15H13ClO5) contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 308.71 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 2-((2-Chloro-6-oxo-7,8,9,10-tetrahydro-6h-benzo[c]chromen-3-yl)oxy)acetic 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.
Physical & Chemical Properties
| Molecular Formula | C15H13ClO5 |
| Molecular Weight | 308.71 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
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