Erythromycin EP Impurity H（Erythromycin A N-oxide） CAS 992-65-4
| CAS No. | 992-65-4 |
| Molecular Formula | C37H67NO14 |
| Molecular Weight | 749.93 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 Erythromycin EP Impurity H（Erythromycin A N-oxide）.
CATO supplies Erythromycin EP Impurity H（Erythromycin A N-oxide） (CAS 992-65-4), a pharmacopoeial impurity reference standard (molecular formula C37H67NO14, MW 749.93 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C37H67NO14, Erythromycin EP Impurity H（Erythromycin A N-oxide） contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 749.93 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Erythromycin EP Impurity H（Erythromycin A N-oxide） 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 | C37H67NO14 |
| Molecular Weight | 749.93 g/mol |
| Purity | >90% |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Erythromycin Standards
- Erythromycin Impurity 46 (CAS CATO-C4X-100146)
- Erythromycin EP Impurity A (CAS 82230-93-1)
- (9Z)-Erythromycin A Oxime (CAS 134931-01-4)
- Erythromycin Z Oxime (CAS CATO-C4X-100129)
- Erythromycin Impurity 39 (CAS CATO-C4X-100139)
- Erythromycin thiocyanate impurity C reduced derivative (CAS CATO-C4X-100167)
- Erythromycin A 9-Oxime (Mixture of Z and E Isomers) (CAS 13127-18-9)
- Erythromycin thiocyanate impurity A reduced derivative (CAS CATO-C4X-100168)
Recommended Standards
- NH-bis(m-PEG8) (CAS 2055013-64-2)
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- 1,2-4,4-Difluoromyristoyl-Sn-Glycero-3-Phosphorylcholine (CAS 79962-98-4)
- Azithromycin Impurity 49 (CAS CATO-C4X-100349)
- Sitafloxacin Impurity 26 HCl (CAS 148693-51-0(Free Acid))
- Pyronaridine Impurity 6 (CAS CATO-C4X-29786)
- Rosuvastatin Impurity 147 (CAS CATO-C4X-1169147)
- 53655-21-3 1-Chloro(1-~13~C)benzene DTXSID90736169 (CAS 53655-21-3)
- 2-(4-Amino-1H-benzo[d]imidazol-1-yl)ethanol (CAS 102872-47-9)
- N-Nitrosocytisine (CAS 19634-60-7)
- (((4R,5R)-2,2-Dimethyl-1,3-dioxolane-4,5-diyl)bis(methylene))bis(bis(4-(trifluoromethyl)phenyl)phosphane) (CAS 1435707-78-0)
- 5-(Aminomethyl)-2-methylbenzoic acid (CAS 733690-37-4)
- Caspofungin Impurity 34 (CAS CATO-C4X-157534)
- Human glucagon CRS (CAS 9007-92-5)
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