Josamycin Impurity M CAS 18361-50-7
| CAS No. | 18361-50-7 |
| Molecular Formula | C39H63NO15 |
| Molecular Weight | 785.92 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.
CATO supplies Josamycin Impurity M (CAS 18361-50-7), a pharmacopoeial impurity reference standard (molecular formula C39H63NO15, MW 785.92 g/mol) used for the identification and quantification of trace impurities in APIs.
Josamycin Impurity M (C39H63NO15) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C39H63NO15 |
| Molecular Weight | 785.92 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
Related Josamycin Standards
- Josamycin EP Impurity H (KitasaMycin A1) (CAS 16846-34-7)
- Josamycin EP Impurity K (CAS 18361-48-3)
- Josamycin EP Impurity I (CAS 18361-47-2)
- Josamycin EP Impurity A (CAS 18361-46-1)
- Josamycin EP Impurity G (CAS 18361-49-4)
- Josamycin Impurity N (CAS 31642-61-2)
- Josamycin EP Impurity D (Isoleucomycin A3) (CAS 22340-94-9)
- Josamycin Impurity 8 (CAS CATO-C4X-30158)
Recommended Standards
- Lyso-Globotriaosylceramide (d18:1) (CAS 126550-86-5)
- Elobixibat Impurity 42 (CAS CATO-C4X-283842)
- Rifaximin Impurity 12 (CAS CATO-C4X-150512)
- Selamectin Impurity A (CAS CATO-C4X-21154)
- Ivabradine impurity 72 (CAS CATO-C4X-111972)
- Palbociclib Impurity 149 (CAS CATO-C4X-1125149)
- Ruxolitinib Impurity 91 (CAS CATO-C4X-205891)
- 6-Amino-1-(tert-butyl)-1H-pyrrolo[2,3-b]pyridine-3-carbonitrile (CAS 915726-39-5)
- 1-[(1-ethylpyrrolidin-2-yl)methyl]-2,5-dimethyl-1h-pyrrole-3-carbaldehyde (CAS 1016828-00-4)
- 3-Methoxyphenyl 2-(2-piperidinyl)ethyl ether (CAS 946682-04-8)
- 8-Methyl-1,2,3,4-tetrahydroquinoline-5-carboxylic acid (CAS 118128-77-1)
- (1s)-1-(4-Methoxy-3-nitrophenyl)ethan-1-amine hydrochloride (CAS 2287247-97-4)
- Baloxavir Marboxil Impurity 168 (CAS CATO-C4X-2108168)
- Polyphemusin II-Derived Peptide (CAS 229030-20-0)
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