Milbemycin A3 Oxime CAS 114177-14-9
| CAS No. | 114177-14-9 |
| Molecular Formula | C31H43NO7 |
| Molecular Weight | 541.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Milbemycin A3 Oxime is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Milbemycin A3 Oxime (CAS 114177-14-9) is a high-purity analytical reference standard with the molecular formula C31H43NO7 and a molecular weight of 541.68 g/mol.
Structurally, Milbemycin A3 Oxime (C31H43NO7) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 541.68 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Milbemycin A3 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 | C31H43NO7 |
| Molecular Weight | 541.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 1 |
Related Milbemycin Standards
- Milbemycin Oxime EP Impurity H (CAS 1025877-03-5)
- Milbemycin Oxime EP Impurity E (CAS 86691-97-6)
- Milbemycin Impurity 5 (CAS 51596-12-4)
- Milbemycin Oxime EP Impurity A (CAS 51596-11-3)
- Milbemycin (CAS 51570-36-6)
- Milbemycin A4 Oxime (CAS 93074-04-5)
- Milbemycin Oxime EP Impurity I (CAS CATO-C4X-169811)
- Milbemycin Oxime EP Impurity F (CAS 86691-98-7)
Recommended Standards
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