4931-68-4 Butyl (S)-(-)-2-pyrrolidone-5-carboxylate Butyl L-pyroglutamate CAS 4931-68-4
| CAS No. | 4931-68-4 |
| Molecular Formula | C9H15NO3 |
| Molecular Weight | 185.22 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 4931-68-4 Butyl (S)-(-)-2-pyrrolidone-5-carboxylate Butyl L-pyroglutamate (CAS 4931-68-4), a certified reference material (molecular formula C9H15NO3, MW 185.22 g/mol) for analytical method development and quality control.
4931-68-4 Butyl (S)-(-)-2-pyrrolidone-5-carboxylate Butyl L-pyroglutamate (C9H15NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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), 4931-68-4 Butyl (S)-(-)-2-pyrrolidone-5-carboxylate Butyl L-pyroglutamate 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 | C9H15NO3 |
| Molecular Weight | 185.22 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
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