Milbemycin Oxime EP Impurity A CAS 51596-11-3
| CAS No. | 51596-11-3 |
| Molecular Formula | C32H46O7 |
| Molecular Weight | 542.70 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Milbemycin Oxime EP Impurity A (CAS 51596-11-3, C32H46O7) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Milbemycin Oxime EP Impurity A (C32H46O7) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 Milbemycin Oxime EP Impurity A 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 | C32H46O7 |
| Molecular Weight | 542.70 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
Related Milbemycin Standards
- Milbemycin Impurity 5 (CAS 51596-12-4)
- Milbemycin Oxime EP Impurity H (CAS 1025877-03-5)
- Milbemycin A3 Oxime (CAS 114177-14-9)
- Milbemycin Oxime EP Impurity E (CAS 86691-97-6)
- Milbemycin A4 Oxime (CAS 93074-04-5)
- Milbemycin Oxime EP Impurity I (CAS CATO-C4X-169811)
- Milbemycin (CAS 51570-36-6)
- Milbemycin D (CAS 77855-81-3)
Recommended Standards
- 1,2-Ethanediamine, N1-[[[2-(trimethoxysilyl)ethyl]phenyl]methyl]- (CAS 74113-77-2)
- 2-((2-(5-(4-(Diphenylamino)phenyl)thieno[3,2-b]thiophen-2-yl)thiazol-5-yl)methylene)malononitrile (CAS 1610050-61-7)
- Atropine Impurity 35 (CAS 5928-44-9)
- Kazusamycin B (CAS 107140-30-7)
- Pitavastatin Impurity 110 (CAS CATO-C4X-1037110)
- Telmisartan Impurity 52 (CAS 7356-11-8)
- Vigabatrin Impurity 11 (CAS CATO-C4X-119611)
- 3-((4,5-Dihydrothiazol-2-yl)amino)benzoic acid (CAS 1707399-64-1)
- methyl 2-methoxy-2-phenylacetate (CAS 3558-61-0)
- 5-(4-Bromophenyl)-2-methylpyrimidine (CAS 131548-21-5)
- 5-(((4-Fluorobenzyl)thio)methyl)-1,3,4-thiadiazol-2-amine (CAS 292064-75-6)
- Methyl 2-Amino-6-fluorobenzoate (CAS 86505-94-4)
- 2-(4,5-Dimethoxy-2-nitrophenyl)-1H-benzo[d]imidazole (CAS 329082-06-6)
- D-[Ser]11-Semaglutide (CAS CATO-CPTD788629)
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