Erythromycin impurity 58 CAS 145259-56-9
| CAS No. | 145259-56-9 |
| Molecular Formula | C37H66N2O12 |
| Molecular Weight | 730.93 g/mol |
| 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.
As a process- or degradation-related impurity, Erythromycin impurity 58 (CAS 145259-56-9, C37H66N2O12) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C37H66N2O12, Erythromycin impurity 58 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 730.93 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).
CATO manufactures Erythromycin impurity 58 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 | C37H66N2O12 |
| Molecular Weight | 730.93 g/mol |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Nitrogen Atoms | 2 |
Related Erythromycin Standards
- Erythromycin A 6,9-Iminoether (CAS CATO-C4X-100128)
- Erythromycin A 9,11-Iminoether (CAS CATO-C4X-100131)
- Erythromycin Sulfonamide Impurity B Oxime Derivative (CAS 231620-64-7)
- Erythromycin (CAS 114-07-8)
- Erythromycin EP Impurity J (CAS 105900-46-7)
- Erythromycin EP Impurity M (CAS 616234-56-1)
- Erythromycin Impurity 23 (CAS 226086-79-9)
- Erythromycin-N,N-dimethyl-13C2 A (CAS 202114-52-1)
Recommended Standards
- Azithromycin CP Impurity Q (CAS 99290-97-8)
- Azithromycin CP Impurity R (CAS 161193-44-8)
- N-Despropyl Gamithromycin (10,13-Imino Ether) (CAS 145414-17-1)
- Azithromycin Impurity 23 (CAS CATO-C4X-100323)
- Lornoxicam Impurity 37 (CAS 106820-63-7)
- Solifenacin Impurity 37 (CAS CATO-C4X-105337)
- Difelikefalin Impurity 96 (CAS CATO-C4X-304196)
- 4-bromo-1-[2-(pyrrolidin-1-yl)ethyl]-1H-pyrazole (CAS 951259-24-8)
- Avanafil Impurity 149 (CAS CATO-C4X-1118149)
- 4-Amino-3-hydroxyisoindolin-1-one (CAS 175533-31-0)
- 4-[(4-Isopropylpiperazin-1-yl)sulfonyl]aniline (CAS 524719-43-5)
- 3-(4-Nitrophenoxy)butan-2-one (CAS 31707-98-9)
- Olaparib Impurity 95 (CAS CATO-C4X-113595)
- endo-Ser39-Tirzepatide (CAS CATO-CPTD788935)
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