4,4′-Dibromo-2,2′,3,3′-tetrahydro-7,7′-dimethoxy-1,1′-spirobi[1H-indene] CAS 223137-76-6
| CAS No. | 223137-76-6 |
| Molecular Formula | C19H18Br2O2 |
| Molecular Weight | 438.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4,4′-Dibromo-2,2′,3,3′-tetrahydro-7,7′-dimethoxy-1,1′-spirobi[1H-indene] 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.
4,4′-Dibromo-2,2′,3,3′-tetrahydro-7,7′-dimethoxy-1,1′-spirobi[1H-indene] (CAS 223137-76-6) is a high-purity analytical reference standard with the molecular formula C19H18Br2O2 and a molecular weight of 438.15 g/mol.
Based on its molecular formula C19H18Br2O2, 4,4′-Dibromo-2,2′,3,3′-tetrahydro-7,7′-dimethoxy-1,1′-spirobi[1H-indene] contains a steroid core, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 438.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H18Br2O2 |
| Molecular Weight | 438.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 2,3-Dibromo-1,4-diphenylnaphthalene (CAS 127257-79-8)
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Recommended Standards
- Dimethyl 2,2'-(adamantane-1,3-diyl)bis(2-bromoacetate) (CAS 202534-05-2)
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- 1-[4-(1-Benzofuran-2-yl)-1,3-thiazol-2-yl]-3-methyl-1H-pyrazol-5-amine (CAS 1176583-70-2)
- (2-(3,4-Dimethylphenyl)oxazol-4-yl)methanol (CAS 885272-90-2)
- (4-Bromo-2,5-difluorophenyl)methanamine (CAS 1256276-39-7)
- 4-(3-Aminobenzofuran-2-yl)-7,8-dimethyl-2H-chromen-2-one (CAS 859133-23-6)
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- thieno[2,3-c]pyridin-7-amine (CAS 215454-72-1)
- 4-(1,4,5,6-Tetrahydropyrimidin-2-yl)aniline (CAS 129545-66-0)
- 6-Butyl-2-methylpyridin-3-amine (CAS 1692608-20-0)
- Gastrin Tetrapeptide (CAS 1947-37-1)
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