Pemetrexed EP Impurity D Trisodium salt CAS 1265908-59-5
| CAS No. | 1265908-59-5 |
| Molecular Formula | C25H25N6O9 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Pemetrexed EP Impurity D Trisodium salt (C25H25N6O9Na) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.5, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 576.50 g/mol, it falls into the moderately-high-molecular-weight range. 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).
Pemetrexed EP Impurity D Trisodium salt (CAS 1265908-59-5) is a certified pharmaceutical impurity reference standard with the molecular formula C25H25N6O9Na and a molecular weight of 576.50 g/mol.
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.
CATO manufactures Pemetrexed EP Impurity D Trisodium salt 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.
Physical & Chemical Properties
| Molecular Formula | C25H25N6O9 3*Na |
| Molecular Weight | 576.50 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 16.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 6 |
Related Pemetrexed Standards
- Pemetrexed Impurity 21 (CAS 1001-19-0)
- Pemetrexed Impurity 11 (CAS 100643-27-4)
- Pemetrexed Impurity 22 (CAS 1075-59-8)
- Pemetrexed Impurity 54 (CAS 1265908-58-4)
- Pemetrexed Impurity (CAS 1265908-60-8)
- Pemetrexed Impurity (CAS 1265908-61-9)
- Pemetrexed Impurity 53 (CAS 1320346-37-9)
- Pemetrexed Impurity 34 (CAS 1320346-43-7)
Recommended Standards
- Chlorhexidine EP Impurity M 2HCl (CAS CATO-C4X-225611)
- Sarpogrelate Impurity 19 (CAS CATO-C4X-291319)
- Cetirizine Impurity 46 HCl (CAS CATO-C4X-108346)
- 4-(2-Aminoethyl)-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 1501186-17-9)
- 5-Chloro-2-(methylthio)pyrimidine-4-carboxylic acid (CAS 61727-33-1)
- 2-((5-(4-Methoxyphenyl)-1h-imidazol-2-yl)thio)acetic acid (CAS 1105192-43-5)
- 1-(3-Bromo-4-fluorobenzyl)-1h-imidazol-2-amine (CAS 1183641-26-0)
- 3-Iodo-1-(propan-2-yl)-1H-pyrazole-4-carboxylic acid (CAS 1946823-02-4)
- 1-Benzyl-5-butyl-6-chloro-3-phenylpyridazin-4(1H)-one (CAS 919198-01-9)
- Neuropeptide FF (CAS 99566-27-5)
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