Pravastatin EP Impurity G Sodium Salt CAS 720666-74-0
| CAS No. | 720666-74-0 |
| Molecular Formula | C18H23O5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO supplies Pravastatin EP Impurity G Sodium Salt (CAS 720666-74-0), a pharmacopoeial impurity reference standard (molecular formula C18H23O5Na, MW 342.37 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Pravastatin EP Impurity G Sodium Salt (C18H23O5Na) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Pravastatin EP Impurity G Sodium Salt 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 | C18H23O5 Na |
| Molecular Weight | 342.37 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
Related Pravastatin Standards
- Pravastatin-d3 Sodium Salt (major) (CAS 1329836-90-9)
- Pravastatin EP Impurity G (CAS 136590-28-8)
- Pravastatin Lactone Di-(tert-butyldimethylsilyl) Ether (CAS 136980-32-0)
- Pravastatin TMBA Salt (CAS 151006-14-3)
- Pravastatin EP Impurity F Sodium Salt (CAS 151061-28-8)
- Pravastatin EP Impurity C Sodium Salt (CAS 159225-12-4)
- Pravastatin EP Impurity C (CAS 159345-66-1)
- Pravastatin Diol Lactone (CAS 159345-93-4)
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- N-[(diphenylphosphinyl)methyl]-n-methylaniline (CAS 76527-75-8)
- Semaglutide impurity 89 (CAS CATO-C4X-222689)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com