Roxithromycin impurity 31 CAS CATO-C4X-130331
| CAS No. | CATO-C4X-130331 |
| Molecular Formula | C45H39N2O17 |
| Molecular Weight | 879.79 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Roxithromycin impurity 31 (CAS CATO-C4X-130331) is a certified pharmaceutical impurity reference standard with the molecular formula C45H39N2O17 and a molecular weight of 879.79 g/mol.
Roxithromycin impurity 31 (C45H39N2O17) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), Roxithromycin impurity 31 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C45H39N2O17 |
| Molecular Weight | 879.79 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) | 27.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Roxithromycin Standards
- Roxithromycin EP Impurity G (CAS 425365-64-6)
- Roxithromycin EP Impurity K (CAS CATO-C4X-130312)
- 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)
Recommended Standards
- Lenvatinib Impurity 111 (CAS CATO-C4X-1140111)
- 1,1,1-Trifluoro-N-[(11bS)-4-oxido-2,6-di-1-pyrenyldinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl]methanesulfonamide (CAS 1372790-39-0)
- (11bS)-N-(2-Naphthalenyl)-2,6-bis(4-nitrophenyl)-N-((perfluorophenyl)methyl)dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-amine (CAS 2022988-31-2)
- 1,1,1-Trifluoro-N-((11bS)-4-oxido-2,6-di(pyren-4-yl)dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl)methanesulfonamide (CAS 1450764-53-0)
- Permethrin EP Impurity H (CAS 56860-12-9)
- Avacopan Impurity 9 (CAS CATO-C4X-29459)
- Oxybutynin Impurity 14 (CAS CATO-C4X-197214)
- 4-(Difluoromethyl)-5-methoxy-6-(trifluoromethyl)nicotinaldehyde (CAS 1804870-94-7)
- Methyl 3-amino-5-(trifluoromethyl)picolinate (CAS 866775-17-9)
- 2-(2,4-Dimethylphenoxy)-3,3,3-trifluoropropan-1-amine (CAS 886764-01-8)
- 2-(4-Carbamoylphenyl)acetic acid (CAS 2393-28-4)
- Trans-octahydroisoquinolin-3(2H)-one (CAS 89104-95-0)
- 3,3-Dimethyl-6-nitrobenzo[c][1,2]oxaborol-1(3H)-ol (CAS 1266084-47-2)
- Peptide Impurity 26 (CAS 1350456-66-4)
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