Methotrexate Diethyl Ester CAS 43170-88-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 43170-88-3 |
| Molecular Formula | C24H30N8O5 |
| Molecular Weight | 510.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity Methotrexate Diethyl Ester (CAS 43170-88-3) pharmaceutical standards reference standard. Molecular formula: C24H30N8O5. Molecular weight: 510.55 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C24H30N8O5 |
| Molecular Weight | 510.55 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.) | 1969 |
| Nitrogen Atoms | 8 |
Related Methotrexate Standards
- Methotrexate Diethyl Ester (CAS CATO-CIM-105887)
- Methotrexate impurity 52 (CAS CATO-C4X-115452)
- Methotrexate Dimethylamide Sodium Salt (CAS CATO-C4X-115436)
- Methotrexate impurity 51 (CAS CATO-C4X-115451)
- Methotrexate-d (CAS 432545-60-3)
- Methotrexate Impurity 83 (CAS CATO-C4X-115483)
- Methotrexate impurity 50 (CAS CATO-C4X-115450)
- Methotrexate impurity 53 (CAS CATO-C4X-115453)
Recommended Standards
- Ethyl 5-(2-{[6-tert-butyl-3-cyano-4-(trifluoromethyl)pyridin-2-yl]sulfanyl}acetamido)-4-cyano-3-methylthiophene-2-carboxylate (CAS 625377-43-7)
- Cyclohexyl 2-(3,4,5-trifluorophenyl)ethyl ketone (CAS 898778-77-3)
- 2-((3-Cyano-4-(4-methoxyphenyl)-6-phenylpyridin-2-yl)thio)-N-(2-methyl-5-nitrophenyl)acetamide (CAS 332018-82-3)
- 2,7-Dimethyl-1H-indole-3-carboxylic acid (CAS 1227270-31-6)
- (2-Trityl-2H-tetrazol-5-yl)methanamine (CAS 886370-78-1)
- 1-(3-(4-Methoxyphenyl)isoxazol-5-yl)-1-(pyridin-3-yl)ethan-1-ol (CAS 890094-95-8)
- 1-Bromo-4-(methylsulfonyl)-2-(trifluoromethyl)benzene (CAS 1820711-75-8)
- 2-Bromo-6-(5-chloro-4-isopropyl-4H-1,2,4-triazol-3-yl)pyridine (CAS 2258660-11-4)
- (3-Hydroxyphenyl)(imino)(methyl)-l6-sulfanone (hydrobromide) (CAS 2825006-52-6)
- Autocamtide-2-Related Inhibitory Peptide TFA (CAS 167114-91-2（free base）)
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 13829788188 / jacky.chen@cato-chem.com