(5Z)-5-(3-Bromopropylidene)-5,11-dihydro-10H-dibenzo[a,d]cyclohepten-10-ol (Z)-(+/-)-5-(3-Bromopropylidene)-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-10-ol 156458-91-2 CAS 156458-91-2
| CAS No. | 156458-91-2 |
| Molecular Formula | C18H17BrO |
| Molecular Weight | 329.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(5Z)-5-(3-Bromopropylidene)-5,11-dihydro-10H-dibenzo[a,d]cyclohepten-10-ol (Z)-(+/-)-5-(3-Bromopropylidene)-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-10-ol 156458-91-2 (CAS 156458-91-2), molecular formula C18H17BrO and molecular weight 329.23 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (5Z)-5-(3-Bromopropylidene)-5,11-dihydro-10H-dibenzo[a,d]cyclohepten-10-ol (Z)-(+/-)-5-(3-Bromopropylidene)-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-10-ol 156458-91-2 (C18H17BrO) contains a steroid core, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 329.23 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), (5Z)-5-(3-Bromopropylidene)-5,11-dihydro-10H-dibenzo[a,d]cyclohepten-10-ol (Z)-(+/-)-5-(3-Bromopropylidene)-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-10-ol 156458-91-2 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 | C18H17BrO |
| Molecular Weight | 329.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Halogen Content | Br-containing |
Recommended Standards
- tert-butyl N-{3-[(3-bromophenyl)amino]propyl}carbamate (CAS 1501810-76-9)
- N'-(1-iminoethyl)-3-(4-(trifluoromethoxy)phenyl)-1,2,4-oxadiazole-5-carbohydrazide (CAS 1623109-09-0)
- 2-(N-Boc-N-butylamino)-5-bromopyridine (CAS 1291487-21-2)
- (2E)-1-(4-Bromophenyl)-3-[4-(propan-2-yl)phenyl]prop-2-en-1-one (CAS 196081-81-9)
- 8-Fluoro-4-hydroxy-3-phenylquinolin-2(1H)-one (CAS 144603-10-1)
- 4-((tert-Butyldimethylsilyl)oxy)-1-phenylbutan-1-one (CAS 143878-47-1)
- 199450-10-7 Copper(1+) (~13~C,~15~N)cyanide DTXSID00746496 (CAS 199450-10-7)
- 1-(5-Chloro-3-fluoropyridin-2-yl)cyclopropan-1-amine (CAS 1266157-97-4)
- N-(3-((5-(1H-Imidazol-1-yl)pentyl)oxy)phenyl)acetamide (CAS 88137-94-4)
- 2-Chloro-N-cyclobutylpyridin-4-amine (CAS 1289208-41-8)
- 3-Nitro-4-(piperidin-1-yl)aniline (CAS 5367-60-2)
- Ebeiedinone (CAS 25650-68-4)
- Lifitegrast Impurity 74 (CAS CATO-C4X-240974)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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