Roxithromycin Impurity 19 CAS 1460313-73-8
| CAS No. | 1460313-73-8 |
| Molecular Formula | C41H76N2O16 |
| Molecular Weight | 853.05 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, Roxithromycin Impurity 19 (CAS 1460313-73-8, C41H76N2O16) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Roxithromycin Impurity 19 (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. 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).
As a certified reference material (CRM), Roxithromycin Impurity 19 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 | C41H76N2O16 |
| Molecular Weight | 853.05 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 2 |
Related Roxithromycin Standards
- Roxithromycin EP Impurity K (CAS CATO-C4X-130312)
- 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)
- 9,9-Bis[4-[di(2-naphthyl)amino]phenyl]fluorene (CAS 916061-87-5)
- 1,4-Bis((6-methoxyquinolin-4-yl)(5-vinylquinuclidin-2-yl)methoxy)anthracene-9,10-dione (CAS 700840-83-1)
- Carfilzomib Impurity 79 (CAS CATO-C4X-102279)
- Rocuronium impurity 67 (CAS CATO-C4X-124267)
- Linaclotide Impurity 32 (CAS CATO-C4X-210632)
- Relugoli Impurity 146 (CAS CATO-C4X-2429146)
- 6,7-Difluorobenzo[d]isoxazol-3-amine (CAS 268734-40-3)
- 2-Chloro-N-methyl-N-(pyrazin-2-ylmethyl)acetamide (CAS 1353983-31-9)
- (S)-2-(Cyclopropyl((1-methylpyrrolidin-2-yl)methyl)amino)acetic acid (CAS 1354001-70-9)
- 3,5-Dimethyl-4-methoxyphenylboronic acid (CAS 301699-39-8)
- N-({4-methyl-2-[4-(trifluoromethyl)phenyl]-1,3-thiazol-5-yl}methyl)furan-2-carboxamide (CAS 866018-69-1)
- (R)-Methyl 3-amino-2-(4-fluorobenzyl)propanoate hydrochloride (CAS 1821827-13-7)
- Fibrinogen-Binding Peptide (CAS 137235-80-4)
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