Methotrexate Impurity 61 CAS 65148-63-2
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 65148-63-2 |
| Molecular Formula | C22H26N8O5 |
| Molecular Weight | 482.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Methotrexate Impurity 61 (CAS 65148-63-2) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C22H26N8O5. Molecular weight: 482.49 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C22H26N8O5 |
| Molecular Weight | 482.49 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 8 |
Related Methotrexate Standards
- Methotrexate impurity N3 (CAS 65148-64-3)
- Methotrexate EP Impurity J (CAS 34378-65-9)
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- Methotrexate impurity 53 (CAS CATO-C4X-115453)
- Methotrexate Impurity 18 (CAS CATO-C4X-115418)
- Methotrexate Dimethylamide (CAS 71074-44-7)
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Recommended Standards
- Pemetrexed Impurity 54 (CAS 1265908-58-4)
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- Pyridoxine /Vitamin B6 Impurity 67 (CAS CATO-C4X-187767)
- 2-(4-Chloro-2-methylphenoxy)-N-(furan-2-ylmethyl)acetamide (CAS 303118-75-4)
- 2'-Fluoro-2'-deoxy-ara-U-3'-phosphoramidite (CAS 1190089-70-3)
- Fmoc-β-Ala-D-2-Nal-OH (CAS CATO-CPTD788342)
- 5-cyclopropyl-3-(3-piperidyl)-1,2,4-oxadiazole (CAS 1339428-26-0)
- Akt/SKG Substrate Peptide (CAS 276680-69-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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