Benzo[2,1-b:3,4-b']bisbenzofuran CAS 222-23-1
| CAS No. | 222-23-1 |
| Molecular Formula | C18H10O2 |
| Molecular Weight | 258.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Benzo[2,1-b:3,4-b']bisbenzofuran.
Benzo[2,1-b:3,4-b']bisbenzofuran (CAS 222-23-1) is a high-purity analytical reference standard with the molecular formula C18H10O2 and a molecular weight of 258.27 g/mol.
Based on its molecular formula C18H10O2, Benzo[2,1-b:3,4-b']bisbenzofuran contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 258.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C18H10O2 |
| Molecular Weight | 258.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Benzo Standards
- Benzo[c]phenanthrene[1,4]quinone (CAS 109699-80-1)
- Benzo[k]fluoranthene- (CAS 1397194-60-3)
- Benzo[1,2-b:3,4-b']bisbenzofuran (CAS 198-88-9)
- (2-(Benzo[d][1,3]dioxol-5-ylmethoxy)pyridin-4-yl)methanamine (CAS 869294-04-2)
- 1-(4-(Benzo[d][1,3]dioxol-5-yl)-2,5-dimethylfuran-3-yl)ethanone (CAS 88484-91-7)
- Benzo[1,2-b;4,5-b']bisbenzofuran" (CAS 208-37-7)
- Benzo[c]phenanthrene[5,6]quinone (CAS 734-41-8)
- 2-(Benzo[d]oxazol-2-ylthio)-1-(1h-pyrrol-2-yl)ethan-1-one (CAS 876556-24-0)
Recommended Standards
- Apixaban Impurity N1 (CAS 6947-36-0)
- Benzyl 2-hydroxy-3-methoxybenzoate (CAS 404033-94-9)
- 8-Acetyl-7-hydroxy-6-methyl-2,3-dihydrocyclopenta[c]chromen-4(1h)-one (CAS 951626-57-6)
- Benzyl N-(5-methoxypyridin-2-yl)carbamate (CAS 2055119-11-2)
- 1-(3-Bromophenyl)-2-thioxodihydro-4,6(1H,5H)-pyrimidinedione (CAS 340311-03-7)
- 1-(3,5-Dichlorobenzyl)-1H-benzo[d][1,2,3]triazole (CAS 1381763-30-9)
- Ethyl 4-(3-formyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-2-yl)piperazine-1-carboxylate (CAS 636989-81-6)
- (2E)-N-Butyl-3-(3-nitrophenyl)prop-2-enamide (CAS 298215-56-2)
- Tris-(2-chloroethyl)urea (CAS 71162-64-6)
- 3-Pyridinecarboximidic acid,Hydrazide (CAS 98495-32-0)
- 5-Bromo-2,6-dimethyl-2H-indazole (CAS 1159511-90-6)
- Linagliptin Impurity 26 (CAS CATO-C4X-110126)
- 1-((((9H-fluoren-9-yl)methoxy)carbonyl)(methyl)amino)-3-methylcyclobutane-1-carboxylic acid (CAS 1702851-18-0)
- Liraglutide Impurity 25 (CAS CATO-C4X-199225)
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