2-Phosphono-4-pentynoic Acid Triethyl Ester CAS 26199-74-6
| CAS No. | 26199-74-6 |
| Molecular Formula | C11H19O5P |
| Molecular Weight | 262.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage, 2-Phosphono-4-pentynoic Acid Triethyl Ester is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 262.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
2-Phosphono-4-pentynoic Acid Triethyl Ester (CAS 26199-74-6), molecular formula C11H19O5P and molecular weight 262.24 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C11H19O5P |
| Molecular Weight | 262.24 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.5 |
| CAS Registry Year (est.) | 1964 |
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