1,3-dibromo-5,6-dihydro-4H-cyclopenta[c]thiophen-4-one CAS 189179-69-9
| CAS No. | 189179-69-9 |
| Molecular Formula | C7H4Br2OS |
| Molecular Weight | 295.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,3-dibromo-5,6-dihydro-4H-cyclopenta[c]thiophen-4-one (CAS 189179-69-9), molecular formula C7H4Br2OS and molecular weight 295.98 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1,3-dibromo-5,6-dihydro-4H-cyclopenta[c]thiophen-4-one (C7H4Br2OS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, 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 295.98 g/mol, it falls into the medium-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.
As a certified reference material (CRM), 1,3-dibromo-5,6-dihydro-4H-cyclopenta[c]thiophen-4-one 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 | C7H4Br2OS |
| Molecular Weight | 295.98 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 2011 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related dibromo Standards
- 3,5-Dibromo-2,6-dimethyl-2,5-heptadien-4-one (CAS 5682-79-1)
- 4,5-Dibromo-2-isopropylpyridazin-3(2H)-one (CAS 104566-47-4)
- (3,5-Dibromo-4-methoxyphenyl)methanol (CAS 114113-99-4)
- 1,3-Dibromo-2-(methoxymethoxy)-benzene (CAS 142273-81-2)
- 3,6-Dibromo-1,2,4,5-benzenetetramine (CAS 1443122-18-6)
- (2,6-Dibromo-4-methoxyphenyl)methanol (CAS 1643918-95-9)
- 1,4-Dibromo-2,3-dimethoxybenzene (CAS 175844-47-0)
- 1,3-Dibromo-2,4-dimethoxybenzene (CAS 185342-88-5)
Recommended Standards
- 4,5-Dichloro-3-(dichloromethyl)-1-phenyl-1H-pyrazole (CAS 18767-09-4)
- 2-Chloro-3-(1,2,2-trichlorovinyl)-2,3-dihydro-1h-inden-1-one (CAS 91634-71-8)
- Nitroxynil-(phenyl13C6), VETRANAL(TM), analytical standard (CAS 1325559-31-6)
- 3-Chloro-2-(trichloromethyl)quinolin-4-amine (CAS 73987-34-5)
- 2,4,6-Trimorpholino-1,3,5-triazine (CAS 16303-23-4)
- 2-(2-Chloropyridin-3-yl)-1-(2,6-dichlorobenzyl)-5,6-dimethyl-1H-benzo[d]imidazole (CAS 339101-17-6)
- (S)-2-Amino-N-ethyl-3-methyl-N-(3-methylbenzyl)butanamide (CAS 1306055-25-3)
- 3-Methyl-6-tosylpyridazine (CAS 1000576-70-4)
- N-(5-Chloro-2-methylphenyl)imidodicarbonimidic diamide (CAS 49872-65-3)
- 2-Cyclopentyl-6-hydroxypyrimidine-4-carboxylic acid (CAS 1368444-27-2)
- 4-((1-(Furan-2-yl)ethyl)amino)butan-2-ol (CAS 1340421-54-6)
- 4-(tert-Butoxycarbonyl)-2-iodobenzoic acid (CAS 1027211-41-1)
- 2,5-Dichloro-4-(5,5-dimethyl-1,3-dioxan-2-yl)butyrophenone (CAS 898756-93-9)
- Semaglutide impurity 62 (CAS CATO-C4X-222662)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com