| CAS No. | 4378-40-9 |
| Molecular Formula | C4H9O5P |
| Molecular Weight | 168.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-Phosphonobutyric acid.
2-Phosphonobutyric acid (CAS 4378-40-9) is a high-purity analytical reference standard with the molecular formula C4H9O5P and a molecular weight of 168.09 g/mol.
The molecular framework of 2-Phosphonobutyric acid (C4H9O5P) is characterized by a carbohydrate-derived structure, a phosphate ester group. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.
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-Phosphonobutyric acid 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.
| Molecular Formula | C4H9O5P |
| Molecular Weight | 168.09 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 0.5 |
| CAS Registry Year (est.) | 1958 |