Josamycin EP Impurity I CAS 18361-47-2
| CAS No. | 18361-47-2 |
| Molecular Formula | C38H63NO14 |
| Molecular Weight | 757.91 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Josamycin EP Impurity I (CAS 18361-47-2) is a certified pharmaceutical impurity reference standard with the molecular formula C38H63NO14 and a molecular weight of 757.91 g/mol.
The molecular framework of Josamycin EP Impurity I (C38H63NO14) 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 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).
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 certified reference material (CRM), Josamycin EP Impurity I 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 | C38H63NO14 |
| Molecular Weight | 757.91 g/mol |
| Purity | 97%+ |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Related Josamycin Standards
- Josamycin EP Impurity G (CAS 18361-49-4)
- Josamycin Impurity N (CAS 31642-61-2)
- Josamycin Impurity M (CAS 18361-50-7)
- Josamycin EP Impurity H (KitasaMycin A1) (CAS 16846-34-7)
- Josamycin EP Impurity K (CAS 18361-48-3)
- Josamycin EP Impurity A (CAS 18361-46-1)
- Josamycin EP Impurity F (CAS 22875-15-6)
- Josamycin EP Impurity D (Isoleucomycin A3) (CAS 22340-94-9)
Recommended Standards
- 9,10,12,13,15,16-Hexabromooctadecanoic acid (CAS 4167-08-2)
- T7GPA66TO8 263562-28-3 Barixibat [INN] 11-(D-Gluconamido)-N-(2-((1S,2R,3S)-3-hydroxy-3-phenyl-2-(2-pyridyl)-1-(2-pyridylamino)propyl)phenyl)undecanamide Barixibat 11-(D-Gluconamido)-N-{2-((1S,2R,3S)-3-hydroxy-3-phenyl-2-(2-pyridyl)-1-(2-pyridylamino)propyl)phenyl}undecanamide UNII-T7GPA66TO8 (CAS 263562-28-3)
- N4-Ethyl-DC CEP (CAS 195535-80-9)
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