Tulathromycin A Impurity 5 CAS 2051579-12-3
| CAS No. | 2051579-12-3 |
| Molecular Formula | C40H77N3O12 |
| Molecular Weight | 792.05 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Tulathromycin A Impurity 5 (CAS 2051579-12-3) is a certified pharmaceutical impurity reference standard with the molecular formula C40H77N3O12 and a molecular weight of 792.05 g/mol.
The molecular framework of Tulathromycin A Impurity 5 (C40H77N3O12) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C40H77N3O12 |
| Molecular Weight | 792.05 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 3 |
Related Tulathromycin Standards
- Tulathromycin A Impurity 3 (CAS CATO-C4X-21074)
- Tulathromycin B (CAS 280755-12-6)
- Tulathromycin A (CAS 217500-96-4)
- Tulathromycin A-d7 (CAS 2734920-62-6)
- Tulathromycin A Impurity 2 (CAS CATO-C4X-21073)
- Tulathromycin A Impurity 8 (CAS 2051579-09-8)
- Tulathromycin A Impurity 6 Diformate (CAS 2051579-11-2 (free base))
- Tulathromycin A Impurity 4 (CAS CATO-C4X-21075)
Recommended Standards
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- 1-Methyl-5-phenyl-1H-pyrazole-4-carboxylic Acid (CAS 105994-75-0)
- (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-6-((bis(ethylamino)methylene)amino)hexanoic acid hydrochloride (CAS 2410074-42-7)
- 3-(Difluoromethyl)-5-methylpyridin-2(1H)-one (CAS 1804688-19-4)
- Semaglutide Impurity 129 (CAS 2490269-79-7)
Why CATO?
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