Spiro[fluorene-9,9'-xanthene] CAS 159-62-6
| CAS No. | 159-62-6 |
| Molecular Formula | C25H16O |
| Molecular Weight | 332.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Spiro[fluorene-9,9'-xanthene] (CAS 159-62-6), molecular formula C25H16O and molecular weight 332.39 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Spiro[fluorene-9,9'-xanthene] (C25H16O) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
CATO manufactures Spiro[fluorene-9,9'-xanthene] 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 | C25H16O |
| Molecular Weight | 332.39 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Spiro Standards
- 10H-Spiro[acridine-9,9'-fluorene] (CAS 92638-81-8)
- Spiro[1,2-benzisothiazole-3(2H),3'-pyrrolidine]-1'-carboxylic acid, 1,1-dimethylethyl ester, 1,1-dioxide (CAS 1251011-18-3)
- Benzyl spiro[indoline-3,4'-piperidine]-1-carboxylate (CAS 167483-91-2)
- Benzyl spiro[indole-3,4'-piperidine]-1'-carboxylate (CAS 184289-85-8)
- Spiro[4H-cyclohepta[2,1-a:3,4-a′]dinaphthalene-4,1′-[2,4]cyclopentadiene], 3,5-dihydro-, (S)- (CAS 125443-42-7)
- Spiro[cyclopenta[1,2-b:5,4-b']dipyridine-5,9'-fluorene] (CAS 171856-25-0)
- Spiro[3H-indole-3,4'-piperidine]-1'-carboxylic acid, 1,2-dihydro-1-methyl-2-oxo-, 1,1-dimethylethyl ester (CAS 497937-62-9)
- SPiro[1,3-dioxolane-2,3′-[1,2,4]metheno[3H]cyclobuta[cd]pentalen]-5′(1′H)-one, 2′,5′a-dibromohexahydro- (CAS 25867-84-9)
Recommended Standards
- 2-Benzyl 6-tert-butyl 2,6-diazaspiro[3.3]heptane-2,6-dicarboxylate (CAS 1542158-69-9)
- 1-(1-Boc-4-piperidyl)benzo[d][1,3]oxazin-2(4H)-one (CAS 162045-30-9)
- N-[2-(N-Boc-N-N-propylamino)ethyl]phthalimide, 97% (CAS 152192-98-8)
- tert-Butyl N-[(4-cyanophenyl)methyl]-N-[(2-methylpropan-2-yl)oxycarbonyl]carbamate (CAS 172348-74-2)
- 3-(Hydroxyimino)methylphenylboronic acid (CAS 938443-32-4)
- N'3-{[6-chloro-4-(trifluoromethyl)-3-pyridyl]carbonyl}-6-chloro-4-(trifluoromethyl)pyridine-3-carbohydrazide (CAS 680214-02-2)
- 1,2,5,6-Tetrabromocyclooctane (CAS 3194-57-8)
- 8-Nitroguanine (CAS 168701-80-2)
- 3-(Isopropylamino)azetidine-3-carboxamide dihydrochloride (CAS 686344-57-0)
- N,N-Dimethyl-N'-(2-methylbenzyl)-1,2-ethanediamine dihydrochloride (CAS 1049802-79-0)
- 2-Chloro-1,1,1-triethoxyethane 51076-95-0 C1288 Orthochloroacetic Acid Triethyl Ester Triethyl Orthochloroacetate (CAS 51076-95-0)
- 4-Bromo-5-((4-fluorophenoxy)methyl)-1-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 946387-34-4)
- N-(4-Chloro-3-(prop-2-yn-1-yl)benzo[d]thiazol-2(3H)-ylidene)thiophene-2-carboxamide (CAS 868377-21-3)
- D-Pro31-Tirzepatide (CAS CATO-CPTD788905)
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