3-Iodo-4,5-dimethoxybenzoic acid CAS 5468-22-4
| CAS No. | 5468-22-4 |
| Molecular Formula | C9H9IO4 |
| Molecular Weight | 308.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Iodo-4,5-dimethoxybenzoic acid (C9H9IO4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
3-Iodo-4,5-dimethoxybenzoic acid (CAS 5468-22-4), molecular formula C9H9IO4 and molecular weight 308.07 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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 Formula | C9H9IO4 |
| Molecular Weight | 308.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | I-containing |
Related Iodo Standards
- 5-Iodo-2,3-dimethoxybenzoic acid (CAS 134419-42-4)
- 6-Iodo-2-oxohexahydro-2H-3,5-methanocyclopenta[b]furan-7-carboxylic acid (CAS 15573-45-2)
- 2-Iodo-3,4-dimethoxybenzoic acid (CAS 6335-18-8)
- 2-Iodo-4,5-dimethoxybenzoic acid (CAS 61203-48-3)
- 2-Iodo-4,6-dimethoxybenzoic acid (CAS 852810-81-2)
- Ethyl 7-iodo-2,3-dihydropyrazolo[5,1-b]oxazole-6-carboxylate (CAS 2226182-91-6)
- Methyl 3-iodo-2,4,6,7-tetrahydropyrano[4,3-c]pyrazole-6-carboxylate (CAS 2795221-51-9)
- [2-iodo-5-(trifluoromethyl)phenyl]methanol (CAS 702641-05-2)
Recommended Standards
- Ethyl 3,5-dihydroxy-4-iodobenzoate (CAS 692204-84-5)
- 1,1,1,5,5,6,6,7,7,7-Decafluoroheptane-2,4-dione (CAS 20583-66-8)
- Methyl 4-hydroxy-2-iodo-3-methoxybenzoate (CAS 2384951-64-6)
- 2-(4-(Difluoromethyl)-5-iodo-6-methylpyridin-3-yl)acetonitrile (CAS 1807143-01-6)
- 6-Bromo-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 89581-42-0)
- 2-(Aminomethyl)-5-(difluoromethyl)-4-iodo-3-methylpyridine (CAS 1807093-46-4)
- (1S,2R)-2-(9H-fluoren-9-ylmethoxycarbonylamino)cyclopentanecarboxylic acid (CAS 1203556-26-6)
- Methylprednisolone 21-Hemisuccinate (Methylprednisolone Hydrogen Succinate) (CAS 2921-57-5)
- 1-(2-Fluoro-4-methylphenyl)thiourea (CAS 930396-09-1)
- (9R)-10,11-Dihydrocinchonan-9-amine (CAS 354532-49-3)
- 2-(Aminomethyl)-4-(difluoromethyl)-3-fluoropyridine-6-carboxylic acid (CAS 1805440-65-6)
- 3-(tert-Butyl)-5-cyclopropoxyisonicotinaldehyde (CAS 1243376-22-8)
- 37011-84-0 (~2~H_3_)-1,3,5-Triazine DTXSID00584456 (CAS 37011-84-0)
- MOTS-c Peptide (CAS 1627580-64-6)
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