Paroxetine HCl Anhydrous EP Impurity B CAS 533-31-3
| CAS No. | 533-31-3 |
| Molecular Formula | C7H6O3 |
| Molecular Weight | 138.12 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 138.12 g/mol gives Paroxetine HCl Anhydrous EP Impurity B distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Paroxetine HCl Anhydrous EP Impurity B (CAS 533-31-3, C7H6O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C7H6O3, Paroxetine HCl Anhydrous EP Impurity B contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 138.12 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Paroxetine HCl Anhydrous EP Impurity B 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 | C7H6O3 |
| Molecular Weight | 138.12 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Paroxetine Standards
- Paroxetine Impurity 15 (CAS 69393-72-2)
- Paroxetine Impurity 50 (CAS 69675-10-1)
- Paroxetine Impurity 25 (CAS CATO-C4X-103525)
- Paroxetine Impurity 21 (CAS 176022-03-0)
- Paroxetine Impurity 8 (CAS CATO-C4X-10358)
- Paroxetine Impurity N1 (Mixture of Diastereomers) (CAS 216690-19-6)
- Paroxetine EP Impurity I (CAS 125224-43-3)
- Paroxetine Impurity 19 (CAS 318279-38-8)
Recommended Standards
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- Peramivir impurity 110 (CAS 2412376-06-6)
- Dronedarone Impurity 55 (CAS 100-07-2)
- Levocarnitine Impurity N29 (CAS 101396-91-2)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com