Pemetrexed Impurity 29 CAS 146943-43-3
| CAS No. | 146943-43-3 |
| Molecular Formula | C24H29N5O6 |
| Molecular Weight | 483.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Pemetrexed Impurity 29 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
As a process- or degradation-related impurity, Pemetrexed Impurity 29 (CAS 146943-43-3, C24H29N5O6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C24H29N5O6, Pemetrexed Impurity 29 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 483.52 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C24H29N5O6 |
| Molecular Weight | 483.52 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Nitrogen Atoms | 5 |
Related Pemetrexed Standards
- Pemetrexed Impurity 28 (CAS CATO-C4X-172628)
- Pemetrexed Impurity 54 (CAS 1265908-58-4)
- Pemetrexed impurity 46 (CAS CATO-C4X-172646)
- Pemetrexed 6-Oxo DiMethyl Ester (CAS 1320346-45-9)
- Pemetrexed Impurity 30 (CAS 155405-81-5)
- Pemetrexed Impurity 51 (CAS CATO-C4X-172651)
- Pemetrexed Impurity N17 (CAS 1644286-36-1)
- Pemetrexed Impurity 12 (CAS CATO-C4X-172612)
Recommended Standards
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- Glutathione Impurity 28 (CAS CATO-C4X-118528)
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- Atomoxetine Impurity 8 (CAS 79130-51-1)
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- Ticagrelor Impurity 94 (CAS 592533-90-9)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com