Erythromycin impurity 76 CAS 34698-88-9
| CAS No. | 34698-88-9 |
| Molecular Formula | C28H50O10 |
| Molecular Weight | 546.69 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Erythromycin impurity 76 is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Erythromycin impurity 76 (CAS 34698-88-9) is a certified pharmaceutical impurity reference standard with the molecular formula C28H50O10 and a molecular weight of 546.69 g/mol.
Based on its molecular formula C28H50O10, Erythromycin impurity 76 contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 546.69 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 impurity 76 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 | C28H50O10 |
| Molecular Weight | 546.69 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
Related Erythromycin Standards
- Erythromycin EP Impurity I（Erythralosamine） (CAS 546-57-6)
- Erythromycin Impurity 38 (CAS CATO-C4X-100138)
- Erythromycin EP Impurity N (CAS 3225-82-9)
- Erythromycin impurity 56 (CAS CATO-C4X-100156)
- Erythromycin Impurity 40 (CAS CATO-C4X-100140)
- Erythromycin Impurity 41 (CAS 33275-72-8)
- Erythromycin EP Impurity K (CAS 33442-56-7)
- Erythromycin Impurity 49 (CAS 229318-98-3)
Recommended Standards
- Dicyclohexyl[3′,4′,5′-trifluoro-3-(1-methylethoxy)-2′,6′-bis(1-methylethyl)[1,1′-biphenyl]-2-yl]phosphine (CAS 2118959-57-0)
- (S)-3,3'-Bis(2-naphthyl)-5,5',6,6',7,7',8,8'-octahydro-1,1'-bi-2,2'-naphthol (CAS 1121764-48-4)
- tert-Butyl ((S)-1-((2S,4R)-4-hydroxy-2-((2-hydroxy-4-(4-methylthiazol-5-yl)benzyl)carbamoyl)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-yl)carbamate (CAS 2247480-45-9)
- (R)-3,3'-Bis(1-naphthyl)-5,5',6,6',7,7',8,8'-octahydro-1,1'-bi-2,2'-naphthol (CAS 1205537-79-6)
- Lifitegrast Impurity 145 (CAS CATO-C4X-2409145)
- Mivacurium chloride Impurity 47 (CAS CATO-C4X-137547)
- Ceftizoxime Impurity 76 (CAS CATO-C4X-179376)
- Olanexidine Impurity 3 (CAS 60852-95-1)
- 1-(5-(1-(2,4-Dichlorophenoxy)ethyl)-1H-pyrazol-1-yl)ethan-1-one (CAS 321385-71-1)
- Ethyl 5-bromo-2-fluoro-3-iodobenzoate (CAS 1541047-38-4)
- 4,4,5,5-Tetramethyl-2-(3-((tetrahydro-2h-pyran-4-yl)methoxy)-5-(trifluoromethyl)phenyl)-1,3,2-dioxaborolane (CAS 2096330-34-4)
- 2-Phenylbenzo[d]oxazol-6-ol (CAS 116496-30-1)
- Ribavirin RC 2 (CAS 594860-43-2)
- Tyr-Proinsulin C-Peptide (55-89) (human) (CAS 139532-11-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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