3-Methyl-4-(2,2,3,3,4,4,5,5,5-nonafluoropentyl)cyclopentane-1,1-dicarboxylic acid CAS 20116-32-9
| CAS No. | 20116-32-9 |
| Molecular Formula | C13H13F9O4 |
| Molecular Weight | 404.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 3-Methyl-4-(2,2,3,3,4,4,5,5,5-nonafluoropentyl)cyclopentane-1,1-dicarboxylic acid (C13H13F9O4) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
3-Methyl-4-(2,2,3,3,4,4,5,5,5-nonafluoropentyl)cyclopentane-1,1-dicarboxylic acid (CAS 20116-32-9) is a high-purity analytical reference standard with the molecular formula C13H13F9O4 and a molecular weight of 404.23 g/mol.
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 | C13H13F9O4 |
| Molecular Weight | 404.23 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | F-containing |
Related Methyl Standards
- 2,2,3,3,4,4,5,5,5-Nonafluoropentyl difluoromethylether (CAS 1661005-79-3)
- 2,2,3,3,4,4,5,5,5-Nonafluoropentyl 2,7-dinitro-9-oxo-9H-fluorene-4-carboxylate (CAS 253605-68-4)
- 2,2,3,3,4,4,5,5,5-nonafluoropentyl 9-(dicyanomethylidene)-2,7-dinitro-9H-fluorene-4-carboxylate (CAS 254973-33-6)
- di(2,2,3,3,4,4,5,5,5-nonafluoropentyl) 9H-fluorene-2,7-disulphonate (CAS 254900-51-1)
- di(2,2,3,3,4,4,5,5,5-nonafluoropentyl) 4,5-dinitro-9-oxo-9H-2,7-fluorenedisulphonate (CAS 254980-69-3)
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