Calcium Folinate EP Impurity B (Mixture of Diastereomers) CAS 98814-60-9
| CAS No. | 98814-60-9 |
| Molecular Formula | C21H23N7O8 |
| Molecular Weight | 501.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Calcium Folinate EP Impurity B (Mixture of Diastereomers) (CAS 98814-60-9), a pharmacopoeial impurity reference standard (molecular formula C21H23N7O8, MW 501.45 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Calcium Folinate EP Impurity B (Mixture of Diastereomers) (C21H23N7O8) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 501.45 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Calcium Folinate EP Impurity B (Mixture of Diastereomers) 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 | C21H23N7O8 |
| Molecular Weight | 501.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 7 |
Related Calcium Standards
- Calcium folinate Impurity 18 (CAS CATO-C4X-22418)
- Calcium folinate Impurity 19 (CAS 77314-00-2)
- Calcium folinate Impurity 11 (CAS CATO-C4X-224111)
- Calcium folinate Impurity 12 (CAS 4349-43-3)
- Calcium Folinate EP Impurity A (CAS 4271-30-1)
- Calcium Folinate Hydrate (CAS 2060570-47-8)
- Calcium Folinate EP Impurity I disodium salt (CAS 133978-76-4)
- Calcium Folinate EP Impurity E calcium salt (CAS CATO-C4X-22417)
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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
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com