Spiramycin EP Impurity D CAS CATO-C4X-23254
| CAS No. | CATO-C4X-23254 |
| Molecular Formula | C43H73NO16 |
| Molecular Weight | 859.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Spiramycin EP Impurity D is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 859.49 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO supplies Spiramycin EP Impurity D (CAS CATO-C4X-23254), a pharmacopoeial impurity reference standard (molecular formula C43H73NO16, MW 859.49 g/mol) used for the identification and quantification of trace impurities in APIs.
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 certified reference material (CRM), Spiramycin EP Impurity D 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 | C43H73NO16 |
| Molecular Weight | 859.49 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 |
| Nitrogen Atoms | 1 |
Related Spiramycin Standards
- Spiramycin I (CAS CATO-C4X-2325)
- Spiramycin EP Impurity B (CAS CATO-C4X-23252)
- Spiramycin EP Impurity D (CAS 87708-39-2)
- Spiramycin EP Impurity B (CAS 249930-66-3)
- Spiramycin (CAS 8025-81-8)
- Spiramycin I (CAS 24916-50-5)
- Spiramycin EP Impurity E (CAS CATO-C4X-23255)
- Spiramycin EP Impurity C (CAS CATO-C4X-23253)
Recommended Standards
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- Tetrakis(methyldiphenylphosphine)nickel (CAS 25037-29-0)
- Vinblastine Impurity 10 (CAS 55855-88-4)
- Hydantoin Impurity 29 (CAS 4371-32-8)
- Naproxen Impurity 20 (CAS 27655-95-4)
- (S)-2-Amino-2-(4-chloro-3-(trifluoromethyl)phenyl)ethanol hydrochloride (CAS 1810074-79-3)
- 4-Methyl-2-(morpholin-4-yl)pyrimidine-5-carboxylic acid (CAS 873450-22-7)
- Neo Spiramycin I (CAS 70253-62-2)
- Desonide Bromo Impurity N9 (CAS 39672-77-0)
- 1-Bromo-2-fluoro-4-(methylsulfonyl)benzene (CAS 1032825-02-7)
- 4-Methoxy-3-(propionylamino)benzoic acid (CAS 712286-88-9)
- Glucagon Monohydrochloride (CAS 28270-04-4)
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