Roxithromycin EP Impurity K CAS CATO-C4X-130312
| CAS No. | CATO-C4X-130312 |
| Molecular Formula | C41H76N2O16 |
| Molecular Weight | 853.05 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Roxithromycin EP Impurity K (CAS CATO-C4X-130312), a pharmacopoeial impurity reference standard (molecular formula C41H76N2O16, MW 853.05 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Roxithromycin EP Impurity K (C41H76N2O16) 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 853.05 g/mol, it falls into the high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 Roxithromycin EP Impurity K 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 | C41H76N2O16 |
| Molecular Weight | 853.05 g/mol |
| Purity | >90% |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Roxithromycin Standards
- Roxithromycin Impurity 19 (CAS 1460313-73-8)
- Roxithromycin Impurity 20 (CAS 1460313-65-8)
- Roxithromycin impurity 27 (CAS CATO-C4X-130327)
- Roxithromycin Impurity 25 (CAS 1094780-37-6)
- Roxithromycin impurity 30 (CAS CATO-C4X-130330)
- Roxithromycin impurity 28 (CAS CATO-C4X-130328)
- Roxithromycin-d7 (CAS CATO-C4X-130322)
- Roxithromycin-d7 (CAS CATO-CCAD300664)
Recommended Standards
- Semaglutide impurity 94 (CAS CATO-C4X-222694)
- 1,4-Bis((6-methoxyquinolin-4-yl)(5-vinylquinuclidin-2-yl)methoxy)anthracene-9,10-dione (CAS 700840-83-1)
- Candesartan Cilexetil EP Impurity H (CAS 170791-09-0)
- 9,9-Bis[4-[di(2-naphthyl)amino]phenyl]fluorene (CAS 916061-87-5)
- Ambroxol Impurity 67 (CAS CATO-C4X-108567)
- Tadalafil Impurity 16 (CAS 629652-44-4)
- Hydrochlorothiazide Impurity 20 (CAS 82205-98-9)
- Delafloxacin Impurity 17 (CAS CATO-C4X-263717)
- 8-Oxo-8-(o-tolyl)octanoic acid (CAS 898765-36-1)
- Benzyl 2-((2-oxopyrrolidin-3-yl)methyl)hydrazinecarboxylate (CAS 2762109-54-4)
- n-(1,2,3,4-Tetrahydroisoquinolin-7-yl)acetamide (CAS 220247-59-6)
- N,N-Diisopropylbenzamide (CAS 20383-28-2)
- 1-{5-[4-(Benzyloxy)phenyl]-2-thienyl}ethanone (CAS 893739-20-3)
- Des-Ile12-Aib13-Tirzepatide (CAS CATO-CPTD788960)
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