3,3＇,4,4＇-Tetrachloroazoxybenzene CAS 21232-47-3
| CAS No. | 21232-47-3 |
| Molecular Formula | C12H6Cl4N2O |
| Molecular Weight | 336.00 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 3,3＇,4,4＇-Tetrachloroazoxybenzene.
3,3＇,4,4＇-Tetrachloroazoxybenzene (CAS 21232-47-3) is a high-purity analytical reference standard with the molecular formula C12H6Cl4N2O and a molecular weight of 336.00 g/mol.
Structurally, 3,3＇,4,4＇-Tetrachloroazoxybenzene (C12H6Cl4N2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 336.00 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 3,3＇,4,4＇-Tetrachloroazoxybenzene 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 | C12H6Cl4N2O |
| Molecular Weight | 336.00 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- 2,4-dichloro-6-iodo-7-methyl-7H-pyrrolo[2,3-d]pyrimidine (CAS 1638763-42-4)
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- 1-(2,6-Difluoro-3-iodophenyl)-2,2,2-trifluoroethan-1-one (CAS 1208078-27-6)
- 4-Bromo-1,5-dichloro-2-(methoxymethoxy)naphthalene (CAS 2852767-30-5)
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- 2-Chloro-5-(chloromethyl)-3-fluoropyridine (CAS 951652-82-7)
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- Insulin Degludec Impurity 26 (CAS CATO-C4X-215726)
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