Doxofylline Impurity 9 CAS CATO-C4X-15139
| CAS No. | CATO-C4X-15139 |
| Molecular Formula | C10H13N3O3 |
| Molecular Weight | 223.23 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 223.23 g/mol gives Doxofylline Impurity 9 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Doxofylline Impurity 9 (CAS CATO-C4X-15139) is a certified pharmaceutical impurity reference standard with the molecular formula C10H13N3O3 and a molecular weight of 223.23 g/mol.
Doxofylline Impurity 9 (C10H13N3O3) contains an amino-acid-derived structure, 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. 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.
As a certified reference material (CRM), Doxofylline Impurity 9 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 | C10H13N3O3 |
| Molecular Weight | 223.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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 | 3 |
Related Doxofylline Standards
- Doxofylline Impurity 2 (CAS 5614-53-9)
- Doxofylline Impurity 33 (CAS CATO-C4X-151333)
- Doxofylline Impurity 35 (CAS CATO-C4X-151335)
- Doxofylline Impurity 10 (CAS CATO-C4X-151310)
- Doxofylline Impurity 18 (CAS 42772-85-0)
- Doxofylline Impurity 40 (CAS 23146-07-8)
- Doxofylline Impurity 20 (CAS 1021-65-4)
- Doxofylline Impurity 12 (CAS 652-37-9)
Recommended Standards
- Metoclopramide impurity 81 (CAS CATO-C4X-141581)
- Oseltamivir impurity 63 (CAS CATO-C4X-1720263)
- Metoclopramide EP Impurity D (CAS 4093-29-2)
- Oseltamivir EP Impurity D (CAS 1346604-18-9)
- Sertraline Impurity 12 (CAS 52795-02-5)
- Ticagrelor Impurity N2 (CAS 1863036-49-0)
- Nitrendipine Impurity 13 (CAS 104765-27-7)
- Ethyl 2-(3-(difluoromethyl)-5,5a,6,6a-tetrahydrocyclopropa[g]indazol-1(4H)-yl)acetate (CAS 1417983-72-2)
- 2-[(4-Chlorophenyl)methyl]-4-{[(4-chlorophenyl)methyl]sulfanyl}quinazoline (CAS 303149-47-5)
- 4,6-Dimethyl-3-phenyl-2,3-dihydrobenzofuran (CAS 820260-18-2)
- 1-Iodo-3,3-dimethylbut-1-yne (CAS 23700-63-2)
- (S)-2-Amino-N-(4-((cyclopropylmethyl)amino)cyclohexyl)-3-methylbutanamide (CAS 1354010-57-3)
- 1-((3,5-Dimethyl-1H-pyrazol-4-yl)sulfonyl)piperidine-3-carboxylic acid (CAS 1025058-85-8)
- Tirzepatide Impurity 59 (CAS CATO-C4X-324059)
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