Afoxolaner Impurity 29 CAS CATO-C4X-313729
| CAS No. | CATO-C4X-313729 |
| Molecular Formula | C26H16ClF9N2O3 |
| Molecular Weight | 610.86 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, Afoxolaner Impurity 29 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 610.86 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Afoxolaner Impurity 29 (CAS CATO-C4X-313729) is a certified pharmaceutical impurity reference standard with the molecular formula C26H16ClF9N2O3 and a molecular weight of 610.86 g/mol.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Afoxolaner Impurity 29 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 | C26H16ClF9N2O3 |
| Molecular Weight | 610.86 g/mol |
| Purity | ≥95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related Afoxolaner Standards
- Afoxolaner Impurity 22 (CAS 1125812-56-7)
- Afoxolaner Impurity 30 (CAS CATO-C4X-313730)
- Afoxolaner Impurity 32 (CAS CATO-C4X-313732)
- Afoxolaner (CAS 1093861-60-9)
- Afoxolaner Impurity 21 (CAS 1124305-96-9)
- Afoxolaner-d6 (CAS CATO-C4X-313725)
- Afoxolaner Impurity 31 (CAS CATO-C4X-313731)
- Afoxolaner impurity 5 (CAS CATO-C4X-31375)
Recommended Standards
- 1,2-Octanoin-3-Stearin (CAS 56149-05-4)
- Polidocanol Impurity 7 (CAS CATO-C4X-29447)
- 3-(Tetradecanoyloxy)propane-1,2-diyl bis(decanoate) (CAS 62833-19-6)
- O-Tetradecyl-nonaethylene Glycol (CAS 7300-81-4)
- Tucatinib Impurity 53 (CAS CATO-C4X-260553)
- Loxoprofen Impurity 6 (CAS CATO-C4X-14886)
- Parecoxib sodium Impurity 11 (CAS 1708094-99-8)
- (2-Cyclopentylethyl)hydrazine (CAS 70082-42-7)
- (E)-1-[(1S)-1-(4-Fluorophenyl)ethyl]-3-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzylidene]piperidin-2-one (CAS 870843-42-8)
- (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)dec-9-enoic acid (CAS 1262886-64-5)
- 1-(1-Bromo-2,2,2-trifluoroethyl)-4-nitrobenzene (CAS 2091158-96-0)
- (S)-1-(Pyridin-3-yl)propan-1-amine dihydrochloride (CAS 1391353-96-0)
- Urapidil Impurity N62 (CAS 41949-07-9)
- Delicious Peptide (bovine) (CAS 73984-05-1)
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