Posaconazole Impurity 22(R,S,S,R) CAS 1229428-90-3
| CAS No. | 1229428-90-3 |
| Molecular Formula | C37H42F2N8O4 |
| Molecular Weight | 700.78 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 700.78 g/mol gives Posaconazole Impurity 22(R,S,S,R) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Posaconazole Impurity 22(R,S,S,R) (CAS 1229428-90-3) is a certified pharmaceutical impurity reference standard with the molecular formula C37H42F2N8O4 and a molecular weight of 700.78 g/mol.
Based on its molecular formula C37H42F2N8O4, Posaconazole Impurity 22(R,S,S,R) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 700.78 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), Posaconazole Impurity 22(R,S,S,R) 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 | C37H42F2N8O4 |
| Molecular Weight | 700.78 g/mol |
| Purity | 97%+ |
| 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) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 8 |
Related Posaconazole Standards
- Posaconazole (CAS 171228-49-2)
- Posaconazole Impurity 12(S,S,R,R) (CAS 2243785-97-7)
- Posaconazole Impurity 13(R,R,R,R) (CAS 170985-61-2)
- Posaconazole Impurity 14(S,R,R,R) (CAS 213381-05-6)
- Posaconazole Impurity 15(S,S,S,S) (CAS 1246391-73-0)
- Posaconazole Impurity 157 (CAS CATO-C4X-1208157)
- Posaconazole Impurity 16(S,R,S,S) (CAS 213381-02-3)
- Posaconazole Impurity 17(R,R,R,S) (CAS 171228-51-6)
Recommended Standards
- Posaconazole Impurity 21(R,R,S,R) (CAS 171228-50-5)
- Posaconazole impurity 221 (CAS CATO-C4X-1208221)
- Posaconazole Impurity 20(R,S,R,S) (CAS 1229428-91-4)
- Posaconazole impurity 222 (CAS CATO-C4X-1208222)
- Crisaborole Impurity 28 (CAS CATO-C4X-202128)
- Linagliptin impurity N1 (CAS 1803079-48-2)
- Dabrafenib Impurity 39 (CAS CATO-C4X-303339)
- 2-Amino-3-mercaptopropanehydrazide (CAS 70470-68-7)
- Undecyl 9-(2-carbamoylhydrazono)-9H-fluorene-4-carboxylate (CAS 303059-58-7)
- 2-(Tert-butoxycarbonyl)octahydro-2h-pyrido[1,2-a]pyrazine-7-carboxylic acid (CAS 1049677-42-0)
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- Methyl 4-acetyl-3-aminobenzoate (CAS 1395101-68-4)
- [1-(3-methylphenyl)cyclopentyl]methanamine (CAS 1098349-30-4)
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