2,4-Dichloro-5,6,8,9-tetrahydrooxepino[4,5-d]pyrimidine CAS 1393545-88-4
| CAS No. | 1393545-88-4 |
| Molecular Formula | C8H8Cl2N2O |
| Molecular Weight | 219.07 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.
2,4-Dichloro-5,6,8,9-tetrahydrooxepino[4,5-d]pyrimidine (CAS 1393545-88-4), molecular formula C8H8Cl2N2O and molecular weight 219.07 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2,4-Dichloro-5,6,8,9-tetrahydrooxepino[4,5-d]pyrimidine (C8H8Cl2N2O) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 2,4-Dichloro-5,6,8,9-tetrahydrooxepino[4,5-d]pyrimidine 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 | C8H8Cl2N2O |
| Molecular Weight | 219.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloro Standards
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