1,4-Diiodo-2,5-dimethoxybenzene CAS 51560-21-5
| CAS No. | 51560-21-5 |
| Molecular Formula | C8H8I2O2 |
| Molecular Weight | 389.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1,4-Diiodo-2,5-dimethoxybenzene (CAS 51560-21-5) is a high-purity analytical reference standard with the molecular formula C8H8I2O2 and a molecular weight of 389.96 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system, 1,4-Diiodo-2,5-dimethoxybenzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 389.96 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 1,4-Diiodo-2,5-dimethoxybenzene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H8I2O2 |
| Molecular Weight | 389.96 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1971 |
| Halogen Content | I-containing |
Related Diiodo Standards
- 1,2-Diiodo-4,5-dimethoxybenzene (CAS 110190-08-4)
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Recommended Standards
- [4-(hydroxymethyl)-2,5-diiodophenyl]methanol (CAS 915706-87-5)
- Dichloro(2-pyridinecarboxylato)gold 88215-41-2 PicAuCl2 (CAS 88215-41-2)
- 2-(3,5-Dibromo-1H-1,2,4-triazol-1-yl)-1-(3-nitrophenyl)ethan-1-one (CAS 1240573-33-4)
- 2-(3,5-Dibromo-1H-1,2,4-triazol-1-yl)-1-(4-nitrophenyl)ethan-1-one (CAS 919431-24-6)
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