2,4-Diiodo-5-methoxybenzene-1,3-diol CAS 134810-56-3
| CAS No. | 134810-56-3 |
| Molecular Formula | C7H6I2O3 |
| Molecular Weight | 391.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,4-Diiodo-5-methoxybenzene-1,3-diol.
2,4-Diiodo-5-methoxybenzene-1,3-diol (CAS 134810-56-3), molecular formula C7H6I2O3 and molecular weight 391.93 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system, 2,4-Diiodo-5-methoxybenzene-1,3-diol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 391.93 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2,4-Diiodo-5-methoxybenzene-1,3-diol 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 | C7H6I2O3 |
| Molecular Weight | 391.93 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | I-containing |
Related Diiodo Standards
- Methyl 2-(4,5-diiodo-1H-imidazol-1-yl)acetate (CAS 1189749-31-2)
- Methyl 2,4-diiodo-1-methyl-1H-imidazole-5-carboxylate (CAS 2648339-71-1)
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- 2,6-Diiodo-3,5-dimethoxypyridine (CAS 1131335-49-3)
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- 2,4-Diiodo-6-nitrophenol (CAS 20294-48-8)
- 2,6-Diiodo-4-nitrophenol (CAS 305-85-1)
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Recommended Standards
- 3-((Benzo[d]oxazol-2-ylthio)methyl)-5-(4-chlorophenyl)-1,3,4-thiadiazole-2(3H)-thione (CAS 84586-83-4)
- N-(4-(5-Chlorothiophen-2-yl)thiazol-2-yl)-1-(methylsulfonyl)pyrrolidine-2-carboxamide (CAS 1219145-14-8)
- N-Desmethyl Toremifene (CAS 110503-61-2)
- Clethodim Sulfone (CAS 111031-17-5)
- 5-(3-Chloro-4-fluorophenyl)-1h-pyrazole (CAS 154258-78-3)
- Gelomuloside B (CAS 149998-39-0)
- 1-(4-Bromophenyl)-3-(2-chlorophenyl)-1H-pyrazol-5-amine (CAS 618098-25-2)
- 4-(2,6-Dimethyl-4-oxopyridin-1(4H)-yl)butanoic acid (CAS 933690-54-1)
- N'-tert-Butyl-N-(2,6-diisopropyl-4-phenoxyphenyl)formimidamide (CAS 169337-81-9)
- Komarovidine (CAS 76971-22-7)
- 1-(2-Bromophenyl)-1h-pyrazol-4-amine (CAS 1153039-45-2)
- 4-Methoxyquinoline-7-carboxylic acid (CAS 1956335-60-6)
- 2-[[(4-Fluorophenyl)methyl]amino]-1,7-dihydro-5-methyl-7-oxo-[1,2,4]triazolo[1,5-α]pyrimidine-6-propanoic Acid (CAS 1281266-20-3)
- [Formaldehyde Schiff-base]-Semaglutide Impurity 136 X TFA Salt (CAS CATO-C4X-2226136)
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