((R)-1-ethoxy-1-oxo-4-phenylbutan-2-yl)-L-alanyl-l-proline xMaleate CAS 76420-75-2
| CAS No. | 76420-75-2 |
| Molecular Formula | C20H28N2O5 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures ((R)-1-ethoxy-1-oxo-4-phenylbutan-2-yl)-L-alanyl-l-proline xMaleate 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.
((R)-1-ethoxy-1-oxo-4-phenylbutan-2-yl)-L-alanyl-l-proline xMaleate (CAS 76420-75-2) is a high-purity analytical reference standard with the molecular formula C20H28N2O5C4H4O4 and a molecular weight of 492.53 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, ((R)-1-ethoxy-1-oxo-4-phenylbutan-2-yl)-L-alanyl-l-proline xMaleate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 492.53 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H28N2O5 C4H4O4 |
| Molecular Weight | 492.53 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 2 |
Related R Standards
- 1-Ethoxy-4-nitrobenzene (CAS 100-29-8)
- (3-Ethoxy-4-fluorophenyl)methanol (CAS 1000207-64-6)
- Benzyl 2-Ethoxy-2-methylpropanoate (CAS 1000296-72-9)
- 2-Ethoxy-4-trifluoromethyl-1,3-thiazole-5-carboxylic acid (CAS 1000575-29-0)
- 2-Ethoxy-2-oxoethyl ethyl malonate (CAS 100074-94-0)
- 18-Ethoxy-18-oxooctadecanoic acid (CAS 1002-59-1)
- 3-Ethoxy-2-propoxybenzaldehyde (CAS 100256-89-1)
- 2-Ethoxy-1,3-dimethyl-1,3,2-diazaphospholidine 2-oxide (CAS 10026-27-4)
Recommended Standards
- 1-(Benzyloxy)-4-(ethoxymethyl)benzene (CAS 501650-32-4)
- Ethyl2-methoxy-4,6-dimethylnicotinate (CAS 112463-87-3)
- 2H,3H,4H-pyrano[2,3-c]pyridine-6-carboxylic Acid (CAS 527681-62-5)
- (2-bromophenyl)-diphenyl-phosphane (2-bromophenyl)-diphenylphosphine 62336-24-7 A833720 (CAS 62336-24-7)
- N-(2-Cyanophenyl)-2-(morpholin-4-yl)acetamide (CAS 189757-27-5)
- N-allyl-N-(4-chlorophenyl)benzenesulfonamide (CAS 306978-10-9)
- Lifitegrast Impurity 22 (CAS CATO-C4X-240922)
- 2-Bromo-5-methyl-3-nitrobenzaldehyde (CAS 1805032-48-7)
- N-Phenylnaphtho[1,2-b]benzofuran-9-amine (CAS 2341894-36-6)
- Palmitoyl Tripeptide-5 TFA (CAS 623172-55-4（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 18665070610 / Nicole.chen@cato-chem.com