1,4:5,8-Dimethanonaphthalene, 6,7-dibromo-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-, trans- (8CI) CAS 20389-65-5
| CAS No. | 20389-65-5 |
| Molecular Formula | C12H8Br2Cl6 |
| Molecular Weight | 524.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
1,4:5,8-Dimethanonaphthalene, 6,7-dibromo-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-, trans- (8CI) (CAS 20389-65-5), molecular formula C12H8Br2Cl6 and molecular weight 524.72 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1,4:5,8-Dimethanonaphthalene, 6,7-dibromo-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-, trans- (8CI) (C12H8Br2Cl6) contains chlorine/bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 524.72 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).
As a certified reference material (CRM), 1,4:5,8-Dimethanonaphthalene, 6,7-dibromo-1,2,3,4,10,10-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-, trans- (8CI) 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 | C12H8Br2Cl6 |
| Molecular Weight | 524.72 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 chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl/Br-containing |
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