3'H-Spiro[fluorene-9,1'-isobenzofuran] CAS 161-37-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 161-37-5 |
| Molecular Formula | C11H8N4O3 |
| Molecular Weight | 244.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3'H-Spiro[fluorene-9,1'-isobenzofuran] (CAS 161-37-5) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C11H8N4O3. Molecular weight: 244.21 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C11H8N4O3 |
| Molecular Weight | 244.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 4 |
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Recommended Standards
- 6-Hydroxy-1-phenyl-1,4-dihydro-5H-pyrazolo[4,3-d]pyrimidine-5,7(6H)-dione (CAS 16078-72-1)
- 1-(6-Methyl-[1,2,3]triazolo[1,5-a]pyrazin-4-yl)-1H-pyrazole-3-carboxylic acid (CAS 1707373-06-5)
- 6-Hydroxy-2-phenyl-2H-pyrazolo[4,3-d]pyrimidine-5,7(4H,6H)-dione (CAS 16078-67-4)
- 2-((3-ACETYL-1H-INDOL-4-YL)OXY)ACETONITRILE (CAS 118855-77-9)
- N-(2,4-Dichlorophenyl)piperidine-2-carboxamide (CAS 193342-41-5)
- (S)-1-Amino-3-phenyl-2-propanol (CAS 133522-38-0)
- Methyl 2-aminoimidazo[1,2-a]pyridine-7-carboxylate (CAS 2092751-59-0)
- 3-{[(4-fluorophenyl)methoxy]methyl}pyrrolidine (CAS 933716-70-2)
- Methyl 3-((4-(5-chloro-2-methylphenyl)piperazin-1-yl)sulfonyl)benzo[b]thiophene-2-carboxylate (CAS 899725-40-7)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
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 13829788188 / jacky.chen@cato-chem.com