Azithromycin EP Impurity Q CAS 2095879-65-3
| CAS No. | 2095879-65-3 |
| Molecular Formula | C44H75N3O15S |
| Molecular Weight | 918.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Azithromycin EP Impurity Q.
CATO supplies Azithromycin EP Impurity Q (CAS 2095879-65-3), a pharmacopoeial impurity reference standard (molecular formula C44H75N3O15S, MW 918.14 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Azithromycin EP Impurity Q is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 918.14 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.
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.
CATO manufactures Azithromycin EP Impurity Q under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C44H75N3O15S |
| Molecular Weight | 918.14 g/mol |
| Purity | >95% |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Azithromycin Standards
- Azithromycin EP Impurity H (CAS 612069-30-4)
- Azithromycin EP Impurity G (CAS 612069-31-5)
- Azithromycin Impurity 29 (CAS CATO-C4X-100329)
- Azithromycin Impurity 31 (CAS CATO-C4X-100331)
- Azithromycin impurity 61 (CAS CATO-C4X-100361)
- Azithromycin Impurity 10 (CAS 217500-34-0)
- Azithromycin impurity 60 (CAS CATO-C4X-100360)
- Azithromycin Impurity 26 (CAS CATO-C4X-100326)
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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