Doxofylline Impurity 11 CAS CATO-C4X-151311
| CAS No. | CATO-C4X-151311 |
| Molecular Formula | C9H12N4O4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Doxofylline Impurity 11 (CAS CATO-C4X-151311) is a certified pharmaceutical impurity reference standard with the molecular formula C9H12N4O4C9H10N4O3 and a molecular weight of 462.42 g/mol.
Doxofylline Impurity 11 (C9H12N4O4C9H10N4O3) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), Doxofylline Impurity 11 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 | C9H12N4O4 C9H10N4O3 |
| Molecular Weight | 462.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
Related Doxofylline Standards
- Doxofylline Impurity 20 (CAS 1021-65-4)
- Doxofylline Impurity 3 (CAS 1174289-18-9)
- Doxofylline-d6 (dimethyl-d6) (CAS 1219805-99-8)
- Doxofylline Impurity 8 (CAS 123524-29-8)
- Doxofylline-d4 (CAS 1346599-13-0)
- Doxofylline Impurity 6 (CAS 1429636-72-5)
- Doxofylline Impurity 1 (CAS 1429636-74-7)
- Doxofylline Impurity 24 (CAS 17743-04-3)
Recommended Standards
- N-Nitroso Ondansetron EP Impurity A (CAS CATO-C4X-139427)
- Isavuconazole Impurity N12 (CAS 2732924-98-8)
- Pramipexole Impurity 53 (CAS CATO-C4X-110753)
- 2-((4-(4-Ethoxyphenyl)-5-(pyridin-3-yl)-4H-1,2,4-triazol-3-yl)thio)-1-(4-methoxyphenyl)ethanone (CAS 477329-43-4)
- 2,2,2-Trichloroethyl trifluoromethanesulfonate (CAS 884520-97-2)
- 3-Ethoxy-1-(5-methylfuran-2-yl)prop-2-en-1-one (CAS 1344648-65-2)
- 2,8,9-Trimethyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane (CAS 120666-13-9)
- 3-Amino-2,2-dimethyl-3-phenylpropanoic acid (CAS 180264-94-2)
- 2-(Ethylsulfonyl)-6-methylthiazolo[4,5-b]pyridine (CAS 488742-24-1)
- Hexapeptide-1 (CAS CATO-CPTD788821)
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