(9Z)-Erythromycin A Oxime CAS 134931-01-4
| CAS No. | 134931-01-4 |
| Molecular Formula | C37H68N2O13 |
| Molecular Weight | 748.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies (9Z)-Erythromycin A Oxime (CAS 134931-01-4), a certified reference material (molecular formula C37H68N2O13, MW 748.94 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, (9Z)-Erythromycin A Oxime is typically off-white to pale yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 748.94 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.
As a certified reference material (CRM), (9Z)-Erythromycin A Oxime 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 | C37H68N2O13 |
| Molecular Weight | 748.94 g/mol |
| Purity | >92% |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 2 |
Related Z Standards
- 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 EP Impurity H（Erythromycin A N-oxide） (CAS 992-65-4)
- Erythromycin Impurity 46 (CAS CATO-C4X-100146)
- Erythromycin EP Impurity A (CAS 82230-93-1)
- Erythromycin Impurity 50 (CAS 37152-22-0)
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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
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