2-Octyl-7-phenylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene CAS 1781261-95-7
| CAS No. | 1781261-95-7 |
| Molecular Formula | C28H28S2 |
| Molecular Weight | 428.65 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.
2-Octyl-7-phenylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene (CAS 1781261-95-7) is a high-purity analytical reference standard with the molecular formula C28H28S2 and a molecular weight of 428.65 g/mol.
Owing to sulfur-containing functionality, a polycyclic aromatic system, 2-Octyl-7-phenylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 428.65 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 2-Octyl-7-phenylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C28H28S2 |
| Molecular Weight | 428.65 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Sulfur Atoms | 2 |
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- 9-Octyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9H-carbazole (CAS 793681-93-3)
Recommended Standards
- 3,5-Dihydroxyergosta-7,22-dien-6-one (CAS 14858-07-2)
- (2R,3R,4S,5R)-1,2:4,5-Di-O-isopropylidene-3-nonadecanol (CAS 570414-07-2)
- OBAA (CAS 134531-42-3)
- (3R,6R,E)-6-((1R,7aR,E)-4-((E)-2-((S)-5-hydroxy-2-methylenecyclohexylidene)ethylidene)-7a-methyloctahydro-1H-inden-1-yl)-2,3-dimethylhept-4-ene-2,3-diol (CAS 791-22-0)
- 2,6-Dimethyl-4-phenylpyridine (CAS 3044-71-1)
- Isobutamben (CAS 94-14-4)
- 2-(3-Chloro-1-benzothiophen-2-yl)-6h,7h-[1,3]oxazolo[5,4-d]pyrimidin-7-one (CAS 937600-48-1)
- 3,3''-Dibromo-2,2':5',2''-terthiophene (CAS 790712-86-6)
- 344912-39-6 (5-Methyl-3-nitro-1H-pyrazol-1-yl)acetic acid DTXSID10361199 (CAS 344912-39-6)
- N1-((tetrahydrofuran-2-yl)methyl)benzene-1,4-diamine (CAS 736088-07-6)
- (1R)-2'-(Diisopropylphosphino)-N,N-dimethyl-[1,1'-binaphthalen]-2-amine (CAS 405877-62-5)
- 4-(1,1-Difluoropropyl)-1-fluoro-2-(trifluoromethyl)benzene (CAS 1138445-49-4)
- ((2S,4R)-4-(Dimethylamino)pyrrolidin-2-yl)methanol dihydrochloride (CAS 1609388-44-4)
- Semaglutide impurity 193 (CAS CATO-C4X-2226193)
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