1-(tert-Butyl) 3-ethyl 2-oxopyrrolidine-1,3-dicarboxylate CAS 188528-95-2
| CAS No. | 188528-95-2 |
| Molecular Formula | C12H19NO5 |
| Molecular Weight | 257.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 1-(tert-Butyl) 3-ethyl 2-oxopyrrolidine-1,3-dicarboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 257.28 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).
1-(tert-Butyl) 3-ethyl 2-oxopyrrolidine-1,3-dicarboxylate (CAS 188528-95-2), molecular formula C12H19NO5 and molecular weight 257.28 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H19NO5 |
| Molecular Weight | 257.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2010 |
| Nitrogen Atoms | 1 |
Recommended Standards
- tert-Butyl 3-acetoxy-4-oxopiperidine-1-carboxylate (CAS 1881288-56-7)
- Methyl 2-amino-4-benzyloxybenzoate (CAS 189063-59-0)
- Methyl 4-((tert-butoxycarbonyl)amino)-3-hydroxycyclopent-1-ene-1-carboxylate (CAS 1824432-78-1)
- 1,3-diethyl 2-methyl-2-(5-oxopyrrolidin-2-yl)propanedioate (CAS 1909306-00-8)
- 2-(Aminomethyl)-4-methoxyaniline (CAS 108047-38-7)
- N-cyclopropyl-2-methyl-7h-pyrrolo[2,3-d]pyrimidin-4-amine (CAS 85251-07-6)
- 2-(4-Isopropylphenyl)-3-methylquinoline-4-carboxylic acid (CAS 350997-49-8)
- 2-Ethyloctan-1-ol (CAS 20592-10-3)
- 2-(4-Benzylpiperazin-1-yl)acetonitrile (CAS 92042-93-8)
- (1-Methyl-1H-pyrazol-3-yl)glycine (CAS 1539886-25-3)
- Ethyl 5-amino-4-bromo-1-propyl-1H-pyrazole-3-carboxylate (CAS 1427024-12-1)
- 6-Phenyl-5-(piperidin-1-yl)-2,3-dihydropyridazin-3-one (CAS 220967-35-1)
- Lurasidone Sulfone (CAS 1644295-09-9)
- Liraglutide Impurity 22 (CAS 536721-25-2)
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