5,11-Dibromo-5,6,11,12-tetrahydrodibenzo[a,e][8]annulene CAS 94275-22-6
| CAS No. | 94275-22-6 |
| Molecular Formula | C16H14Br2 |
| Molecular Weight | 366.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5,11-Dibromo-5,6,11,12-tetrahydrodibenzo[a,e][8]annulene 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.
5,11-Dibromo-5,6,11,12-tetrahydrodibenzo[a,e][8]annulene (CAS 94275-22-6), molecular formula C16H14Br2 and molecular weight 366.09 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5,11-Dibromo-5,6,11,12-tetrahydrodibenzo[a,e][8]annulene (C16H14Br2) contains bromine substitution, a polycyclic aromatic system. 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 366.09 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).
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.
Physical & Chemical Properties
| Molecular Formula | C16H14Br2 |
| Molecular Weight | 366.09 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| 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.) | 1983 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 4,12-Dibromo[2.2]paracyclophane (CAS 23927-40-4)
- 4,16-Dibromo[2.2]paracyclophane (CAS 96392-77-7)
- 1,8-Dibromo-2-methyl-9H-fluoren-9-one (CAS 127375-23-9)
- 2,3-Dibromo-5-ethoxy-4-isopropoxybenzaldehyde (CAS 832674-18-7)
- 2,3-Dibromo-5-ethoxy-4-propoxybenzaldehyde (CAS 832674-11-0)
- 2-[3,5-Dibromo-4-(propan-2-yloxy)phenyl]-1,3-dioxolane (CAS 2221812-17-3)
- 3,6-Dibromo-8-methyl-2-phenylimidazo[1,2-a]pyridine (CAS 2404733-66-8)
- 3,7-Dibromo-10,11-dihydro-5H-dibenzo[a,d][7]annulen-5-one (CAS 226946-20-9)
Recommended Standards
- Tricyclo[8.2.2.24,7]hexadeca-4,6,10,12,13,15-hexaene, 5,12-dibromo-, stereoisomer (CAS 23927-42-6)
- Brombuterol (CAS 41937-02-4)
- Tricyclo[8.2.2.24,7]hexadeca-4,6,10,12,13,15-hexaene, 5,11-dibromo-, stereoisomer (CAS 196316-30-0)
- (E)-2-(3,5-Bis(trifluoromethyl)styryl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1073354-87-6)
- 6-Hydroxy-4-methoxy-2-methylbenzofuran-3(2H)-one (CAS 83949-10-4)
- 3-Cyclobutylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 1779132-88-5)
- 4-[(2-Ethoxyphenoxy)methyl]piperidine (CAS 756474-44-9)
- (R)-N-(1-(2-Aminoacetyl)pyrrolidin-3-yl)acetamide (CAS 1353999-70-8)
- 3-Benzyl-5-bromopyrimidin-4(3H)-one (CAS 89185-09-1)
- Ethyl 5-bromo-4-cyano-2-iodobenzoate (CAS 1805419-17-3)
- 6-(2-Hydroxyethyl)-5-methyl-2-(propylthio)-[1,2,4]triazolo[1,5-a]pyrimidin-7(4H)-one (CAS 1708401-87-9)
- 3-(Bis(tert-butoxycarbonyl)amino)propanal (CAS 1112262-49-3)
- Boc-Orn(Z)-OH (CAS 2480-93-5)
- β-Asp9-Tirzepatide (CAS CATO-CPTD788931)
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