Josamycin Impurity 7 CAS CATO-C4X-30157
| CAS No. | CATO-C4X-30157 |
| Molecular Formula | C42H67NO16 |
| Molecular Weight | 841.98 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a process- or degradation-related impurity, Josamycin Impurity 7 (CAS CATO-C4X-30157, C42H67NO16) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Josamycin Impurity 7 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 841.98 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Josamycin Impurity 7 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 | C42H67NO16 |
| Molecular Weight | 841.98 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Josamycin Standards
- Josamycin EP Impurity J (CAS CATO-C4X-301512)
- Josamycin EP Impurity E (Platenomycin A1) (CAS 40615-47-2)
- Josamycin EP Impurity B (18-Dihydroleucomycin A3) (CAS 40361-41-9)
- Josamycin EP Impurity D (Isoleucomycin A3) (CAS 22340-94-9)
- Josamycin Impurity 8 (CAS CATO-C4X-30158)
- Josamycin EP Impurity A (CAS 18361-46-1)
- Josamycin EP Impurity K (CAS 18361-48-3)
- Josamycin Propionate - API Standards (CAS 40922-77-8)
Recommended Standards
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- Fmoc-Lys (biotin-PEG4)-OH (CAS 1334172-64-3)
- Furosemide Impurity 47 (CAS CATO-C4X-140247)
- Cenobamate Impurity 18 (CAS CATO-C4X-241618)
- Roxadustat Impurity 47 (CAS CATO-C4X-221347)
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- Polyphemusin II-Derived Peptide (CAS 229030-20-0)
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