Methotrexate Impurity 64 CAS 52980-66-2
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 52980-66-2 |
| Molecular Formula | C20H22N8O5 |
| Molecular Weight | 454.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Methotrexate Impurity 64 (CAS 52980-66-2) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C20H22N8O5. Molecular weight: 454.44 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C20H22N8O5 |
| Molecular Weight | 454.44 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.) | 1972 |
| Nitrogen Atoms | 8 |
Related Methotrexate Standards
- Methotrexate EP Impurity F (CAS 51865-79-3)
- Methotrexate (CAS 59-05-2)
- Methotrexate Impurity 2 (CAS 80407-56-3)
- Methotrexate EP Impurity C (CAS 2410-93-7)
- Methotrexate-d3 (CAS 432545-63-6)
- Methotrexate Impurity 11 (CAS 143873-72-7)
- Methotrexate EP Impurity B (CAS 54-62-6)
- Methotrexate EP Impurity H (CAS 67022-39-3)
Recommended Standards
- (+/-)Amethopterin (CAS 60388-53-6)
- 2,5-Dichloro-N-(4-(4-pentylcyclohexyl)phenyl)benzenesulfonamide (CAS 478041-42-8)
- 1,4-Bis(2-(benzo[d][1,3]dioxol-5-ylmethylene)hydrazinyl)phthalazine (CAS 27704-20-7)
- Amphotericin B Impurity 18 (CAS CATO-C4X-184418)
- Artesunate Impurity 6 (CAS CATO-C4X-15476)
- Methyl 8-chloro-2-methyl-4-oxo-3,4,5,6-tetrahydro-2H-2,6-methanobenzo[g][1,3]oxazocine-5-carboxylate (CAS 353296-61-4)
- 2',3',4,4',5',6'-Hexafluoro-[1,1'-biphenyl]-2-carboxylic acid (CAS 1261836-24-1)
- 2-amino-2-(1H-1,2,3,4-tetrazol-5-yl)acetic acid (CAS 138199-51-6)
- Voglibose Impurity 27 (CAS CATO-C4X-178027)
- Ephrin-A2-Selective YSA-Peptide (CAS 532441-10-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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