3'H-Spiro[fluorene-9,1'-isobenzofuran] CAS 161-37-5
| 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
Structurally, 3'H-Spiro[fluorene-9,1'-isobenzofuran] (C11H8N4O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 244.21 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies 3'H-Spiro[fluorene-9,1'-isobenzofuran] (CAS 161-37-5), a certified reference material (molecular formula C11H8N4O3, MW 244.21 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3'H-Spiro[fluorene-9,1'-isobenzofuran] meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
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 |
Related H Standards
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- Spiro[benzo[b]pyrrolo[1,2-d][1,4]oxazine-4,4'-piperidine] (CAS 1346499-00-0)
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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)
- 1-(6-Methyl-[1,2,3]triazolo[1,5-a]pyrazin-4-yl)-1H-imidazole-4-carboxylic acid (CAS 1708013-77-7)
- 2-((3-ACETYL-1H-INDOL-4-YL)OXY)ACETONITRILE (CAS 118855-77-9)
- N-(2,4-Dichlorophenyl)piperidine-2-carboxamide (CAS 193342-41-5)
- n-(4-Chlorophenyl)-4-(trifluoromethyl)benzamide (CAS 329906-02-7)
- (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)
- 2-Amino-6-isopropyl-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carbonitrile (CAS 26830-40-0)
- Ethyl (2-isocyanoacetyl)glycinate (CAS 72536-53-9)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
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