2,5-Difluoro-9H-fluoren-9-one CAS 2969-61-1
| CAS No. | 2969-61-1 |
| Molecular Formula | C20H25N5O6 |
| Molecular Weight | 431.44 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 2,5-Difluoro-9H-fluoren-9-one.
2,5-Difluoro-9H-fluoren-9-one (CAS 2969-61-1), molecular formula C20H25N5O6 and molecular weight 431.44 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,5-Difluoro-9H-fluoren-9-one (C20H25N5O6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 431.44 g/mol, it falls into the moderately-high-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).
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 2,5-Difluoro-9H-fluoren-9-one 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 | C20H25N5O6 |
| Molecular Weight | 431.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 5 |
Related Difluoro Standards
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- 2,2-Difluoro-2-(1,1,2,2-tetrafluoro-2-(perfluorobutoxy)ethoxy)ethan-1-ol (CAS 152914-73-3)
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Recommended Standards
- 2-((3-Acetylphenyl)amino)-2-oxo-1-phenylethyl 2,3-dihydrobenzo[b][1,4]dioxine-6-carboxylate (CAS 438602-71-2)
- 6'-(Diethylamino)-3'-hydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-2'-carboxylic acid (CAS 6359-29-1)
- (5S,8S,9R)-8-Benzoyl-2-((1S)-1,4-dihydroxyhex-2-en-1-yl)-9-hydroxy-8-methoxy-3-methyl-1-oxa-7-azaspiro[4.4]non-2-ene-4,6-dione (CAS 77409-68-8)
- Methyl 5-(3-(ethoxycarbonyl)-1-(p-tolyl)-1H-pyrazol-4-yl)-3-phenylisoxazole-4-carboxylate (CAS 321571-35-1)
- N-(4-ethylphenyl)-2-(4-formyl-2-methoxyphenoxy)acetamide (CAS 446040-72-8)
- sFRP-1 Inhibitor - CAS 915754-88-0 - Calbiochem (CAS 915754-88-0)
- 2-Phenyl-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline (CAS 867164-54-3)
- 2-Amino-1-(2,6-difluorophenyl)-4,5-dimethyl-1H-pyrrole-3-carbonitrile (CAS 1094274-74-4)
- Ethyl 2-((4-acetylphenyl)amino)-4-(trifluoromethyl)thiazole-5-carboxylate (CAS 937598-16-8)
- 4-Bromo-3,3-difluorotetrahydrofuran (CAS 2436599-25-4)
- 1,3-Isobenzofurandione, polymer with 2-(hydroxymethyl)-2-methyl-1,3-propanediol, 4-(1,1-dimethylethyl)benzoate nonanoate (CAS 67989-21-3)
- methyl 3-(4-methylphenyl)-2-sulfanylpropanoate (CAS 139744-19-7)
- Methyl 4-chloro-1-methyl-1H-pyrrole-2-carboxylate (CAS 119866-61-4)
- Semaglutide Impurity 16 (CAS CATO-C4X-222616)
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