Pentoxifylline impurity 38 CAS CATO-C4X-172838
| CAS No. | CATO-C4X-172838 |
| Molecular Formula | C11H16N4O3 |
| Molecular Weight | 252.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Pentoxifylline impurity 38 (CAS CATO-C4X-172838) is a certified pharmaceutical impurity reference standard with the molecular formula C11H16N4O3 and a molecular weight of 252.27 g/mol.
Based on its molecular formula C11H16N4O3, Pentoxifylline impurity 38 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 252.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Pentoxifylline impurity 38 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 | C11H16N4O3 |
| Molecular Weight | 252.27 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Pentoxifylline Standards
- Pentoxifylline Impurity N3 (CAS 70486-28-1)
- Pentoxifylline Impurity 14 (CAS 6493-07-8)
- Pentoxifylline EP Impurity D (CAS 59413-14-8)
- Pentoxifylline EP Impurity I (CAS 55247-90-0)
- Pentoxifylline Impurity 15 (CAS 1246816-64-7)
- Pentoxifylline (CAS 6493-05-6)
- Pentoxifylline EP Impurity G (CAS 93079-86-8)
- Pentoxifylline impurity 35 (CAS CATO-C4X-172835)
Recommended Standards
- Irbesartan Impurity 18 (CAS CATO-C4X-166618)
- Phenytoin (CAS 57-41-0)
- Minodronic Impurity 12 (CAS CATO-C4X-124112)
- Morinidazole Impurity 43 (CAS CATO-C4X-219643)
- Esmolol Impurity 76 (CAS CATO-C4X-189176)
- Posaconazole Impurity 73 (CAS 1370190-94-5 (free base))
- Methyldopa EP Impurity A (CAS 6739-31-7（free base）)
- 5-Hydroxy-4-phenylisoquinolin-1(2H)-one (CAS 656234-16-1)
- 951887-46-0 2-Chloro-4-(2-naphthyl)-1-butene MFCD09801379 (CAS 951887-46-0)
- 1-(4-Aminopiperidin-1-yl)-3-cyclohexylpropan-1-one (CAS 1016534-65-8)
- 2-((6-Methyl-1H-benzo[d]imidazol-2-yl)thio)acetic acid (CAS 27231-37-4)
- 2-(2-(2-(5-Nitrofuran-2-yl)vinyl)benzamido)acetic acid (CAS 62113-77-3)
- [4-(trideuteriomethoxymethyl)norbornan-1-yl]methanol (CAS 2725774-25-2)
- Semaglutide Impurity 82 (CAS CATO-C4X-222682)
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