3,4-Dimethoxybenzoic anhydride CAS 24824-54-2
| CAS No. | 24824-54-2 |
| Molecular Formula | C18H18O7 |
| Molecular Weight | 346.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3,4-Dimethoxybenzoic anhydride 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.
3,4-Dimethoxybenzoic anhydride (CAS 24824-54-2), molecular formula C18H18O7 and molecular weight 346.33 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3,4-Dimethoxybenzoic anhydride (C18H18O7) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C18H18O7 |
| Molecular Weight | 346.33 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
Related Dimethoxybenzoic Standards
- 2,4-Dimethoxybenzoic acid ethyl ester (CAS 81722-07-8)
- 3-Ethyl-2,6-dimethoxybenzoic acid (CAS 96897-97-1)
- 4-ethyl-3,5-dimethoxybenzoic acid (CAS 55703-68-9)
- 3,5-Dimethoxybenzoic acid (CAS 1132-21-4)
- 2,6-Dimethoxybenzoic Acid (CAS 1466-76-8)
- 2,5-Dimethoxybenzoic Acid (CAS 2785-98-0)
- 2,4-Dimethoxybenzoic Acid (CAS 91-52-1)
- 2,3-Dimethoxybenzoic Acid (CAS 1521-38-6)
Recommended Standards
- 3-({[4-cyclopropyl-6-(methylthio)-1,3,5-triazin-2-yl]amino}methylidene)-1,1,1-trifluoropentane-2,4-dione (CAS 649665-90-7)
- 3′,5-Dihydroxy-4′,6,7-trimethoxyflavanone (CAS 90850-99-0)
- 2-[(3S)-2,6-dioxo-3-piperidyl]-4-(4-hydroxybutoxy)isoindoline-1,3-dione (CAS 2230956-87-1)
- 3-Methylisoxazolo[5,4-b]pyridine (CAS 58035-50-0)
- 2-Bromoindolizine-1-carboxylic acid (CAS 1369143-94-1)
- 6-chloro-5-methoxy-1,3-benzoxazol-2-amine (CAS 1820710-85-7)
- 4-Nitropyridine-d (CAS 1124-33-0)
- Atogepant Impurity 22 (CAS 1318253-26-7)
- Rimiducid (CAS 195514-63-7)
- N-(2-Bromophenyl)-2-chlorobenzamide (CAS 299954-54-4)
- (4S,4'S)-2,2'-Cyclopropylidenebis[4,5-dihydro-4-isopropyloxazole] (CAS 875640-19-0)
- N-(4-nitrophenyl)hydrazinecarboxamide (CAS 17433-93-1)
- 5-Chloro-1-(4-methylphenyl)-1h-1,2,3,4-tetrazole (CAS 36951-51-6)
- Semaglutide impurity 43 (CAS CATO-C4X-222643)
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