(1R,4S)-Acetic acid 4-tert-butoxycarbonylamino-cyclopent-2-enyl ester CAS 657397-03-0
| CAS No. | 657397-03-0 |
| Molecular Formula | C12H19NO4 |
| Molecular Weight | 241.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies (1R,4S)-Acetic acid 4-tert-butoxycarbonylamino-cyclopent-2-enyl ester (CAS 657397-03-0), a certified reference material (molecular formula C12H19NO4, MW 241.28 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, (1R,4S)-Acetic acid 4-tert-butoxycarbonylamino-cyclopent-2-enyl ester is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 241.28 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).
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 | C12H19NO4 |
| Molecular Weight | 241.28 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.) | 1985 |
| Nitrogen Atoms | 1 |
Recommended Standards
- (1R,4S)-2-(tert-butoxycarbonyl)-2-azabicyclo[2.2.1]Heptane-4-carboxylic acid (CAS 2031259-83-1)
- (1R,4S,5R)-2-(tert-butoxycarbonyl)-2-azabicyclo[2.2.1]Heptane-5-carboxylic acid (CAS 2165408-95-5)
- (1R,3S,5S)-2-(tert-butoxycarbonyl)-1-methyl-2-azabicyclo[3.1.0]Hexane-3-carboxylic acid (CAS 2414675-25-3)
- (1S,2R)-Boc-2-aminocyclohex-3-ene-carboxylic acid (CAS 233600-33-4)
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