2-Iodo-3,4-dimethoxybenzaldehyde CAS 138490-95-6
| CAS No. | 138490-95-6 |
| Molecular Formula | C9H9IO3 |
| Molecular Weight | 292.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system, 2-Iodo-3,4-dimethoxybenzaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 292.07 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
2-Iodo-3,4-dimethoxybenzaldehyde (CAS 138490-95-6) is a high-purity analytical reference standard with the molecular formula C9H9IO3 and a molecular weight of 292.07 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H9IO3 |
| Molecular Weight | 292.07 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, keep tightly closed to prevent evaporation |
| 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.) | 1996 |
| Halogen Content | I-containing |
Related Iodo Standards
- 5-Iodo-2-methoxy-4-methylbenzoic acid (CAS 1241674-09-8)
- Methyl 2-iodo-6-methoxybenzoate (CAS 1379337-67-3)
- Methyl 4-iodo-2-methoxybenzoate (CAS 148490-97-5)
- 2-Iodo-4,6-dimethoxybenzaldehyde (CAS 16147-09-4)
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- 2-Iodo-4,5-dimethoxybenzaldehyde (CAS 61203-53-0)
Recommended Standards
- Methyl 4-(aminomethyl)-6-iodopicolinate (CAS 1393547-02-8)
- 1-Allyl-4-iodo-5-methyl-1H-pyrazole-3-carboxylic acid (CAS 1373247-63-2)
- Methyl 2-(aminomethyl)-6-iodoisonicotinate (CAS 1393555-02-6)
- 1-Allyl-4-iodo-3-methyl-1H-pyrazole-5-carboxylic acid (CAS 1373247-42-7)
- methyl 2,4-dichloro-5-methoxybenzoate (CAS 253268-24-5)
- Ethyl 5-(2-Methoxyphenyl)isoxazole-3-carboxylate (CAS 110578-28-4)
- Methyl 3-(4-nitrophenyl)oxirane-2-carboxylate (CAS 108492-48-4)
- (4-Methylcyclohexyl)(thiophen-2-yl)methanamine (CAS 1249956-15-7)
- Cefprozil Impurity 52 (CAS CATO-C4X-149252)
- 3-Phenethyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione (CAS 862316-69-6)
- 4,4'-Dibutoxybiphenyl (CAS 39800-63-0)
- tert-Butyl (2R,3R)-2-(hydroxymethyl)-3-(trifluoromethyl)azetidine-1-carboxylate (CAS 2810050-48-5)
- Pantoprazole Impurity 34 (CAS 107512-35-6)
- D-Thr7-Tirzepatide (CAS CATO-CPTD788924)
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