Clarithromycin EP Impurity F CAS 128940-83-0
| CAS No. | 128940-83-0 |
| Molecular Formula | C39H71NO13 |
| Molecular Weight | 761.98 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Clarithromycin EP Impurity F (CAS 128940-83-0) is a certified pharmaceutical impurity reference standard with the molecular formula C39H71NO13 and a molecular weight of 761.98 g/mol.
Structurally, Clarithromycin EP Impurity F (C39H71NO13) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 761.98 g/mol, it falls into the high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 manufactures Clarithromycin EP Impurity F 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 | C39H71NO13 |
| Molecular Weight | 761.98 g/mol |
| Purity | >90% |
| Storage | Store at room temperature, 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 1 |
Related Clarithromycin Standards
- Clarithromycin EP Impurity E (CAS 81103-14-2)
- Clarithromycin EP Impurity P (CAS 123967-58-8)
- Clarithromycin Impurity 21 (CAS CATO-C4X-100221)
- Clarithromycin EP Impurity H (CAS 127140-69-6)
- Clarithromycin 9-Oxime (CAS 103450-87-9)
- Clarithromycin EP Impurity C (CAS 127253-06-9)
- Clarithromycin EP Impurity L (CAS 127253-05-8)
- Clarithromycin EP Impurity A (CAS 124412-58-4)
Recommended Standards
- N-formyl-175-J (CAS 1382419-20-6)
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- Dibenzocyclooctyl-PEG4-biotin conjugate (CAS 1255942-07-4)
- 7-Troc Baccatin III (CAS 103150-33-0)
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- Ceftazidime Impurity 18 (CAS CATO-C4X-121218)
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- 1,3-Dimethyl-1H-pyrazole-5-methylamine, 97% (CAS 499770-63-7)
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- N-(4-ethylphenyl)-N-[(5-methylthien-2-yl)methyl]amine (CAS 869947-61-5)
- Proinsulin C-Peptide (55-89) (human) (CAS 11097-48-6)
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