9H-Perfluorononanoic acid CAS 76-21-1
| CAS No. | 76-21-1 |
| Molecular Formula | C9H2F16O2 |
| Molecular Weight | 446.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
9H-Perfluorononanoic acid (CAS 76-21-1) is a high-purity analytical reference standard with the molecular formula C9H2F16O2 and a molecular weight of 446.09 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, 9H-Perfluorononanoic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 446.09 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C9H2F16O2 |
| Molecular Weight | 446.09 g/mol |
| Purity | >95% |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
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