tert-Butyl 5-oxo-1H,2H,3H,3aH,4H,5H-cyclopenta[c]pyrrole-2-carboxylate CAS 148404-32-4
| CAS No. | 148404-32-4 |
| Molecular Formula | C12H17NO3 |
| Molecular Weight | 223.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
tert-Butyl 5-oxo-1H,2H,3H,3aH,4H,5H-cyclopenta[c]pyrrole-2-carboxylate (CAS 148404-32-4), molecular formula C12H17NO3 and molecular weight 223.27 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, tert-Butyl 5-oxo-1H,2H,3H,3aH,4H,5H-cyclopenta[c]pyrrole-2-carboxylate (C12H17NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 223.27 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), tert-Butyl 5-oxo-1H,2H,3H,3aH,4H,5H-cyclopenta[c]pyrrole-2-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H17NO3 |
| Molecular Weight | 223.27 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 1 |
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