1-(1-Ethyl-5-methyl-1H-pyrazol-3-yl)-5-oxopyrrolidine-3-carboxylic acid CAS 925199-99-1
| CAS No. | 925199-99-1 |
| Molecular Formula | C11H15N3O3 |
| Molecular Weight | 237.26 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.
1-(1-Ethyl-5-methyl-1H-pyrazol-3-yl)-5-oxopyrrolidine-3-carboxylic acid (CAS 925199-99-1), molecular formula C11H15N3O3 and molecular weight 237.26 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H15N3O3, 1-(1-Ethyl-5-methyl-1H-pyrazol-3-yl)-5-oxopyrrolidine-3-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 237.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 1-(1-Ethyl-5-methyl-1H-pyrazol-3-yl)-5-oxopyrrolidine-3-carboxylic acid 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 | C11H15N3O3 |
| Molecular Weight | 237.26 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, 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Recommended Standards
- (E)-2-Amino-5-((4-aminophenyl)diazenyl)benzonitrile (CAS 2304494-79-7)
- 1-(1H-Benzo[d][1,2,3]triazol-1-yl)-2-phenylethanone (CAS 30516-21-3)
- (E)-2-(1-methyl-1H-pyrrole-2-carbonyl)-3-(pyridin-3-yl)acrylonitrile (CAS 900019-55-8)
- 1-(3-Amino-4-nitrophenyl)piperidin-4-ol (CAS 404009-22-9)
- Spiro[2.3]hexan-5-ylmethanamine (CAS 1495658-59-7)
- HMBR (CAS 1287651-36-8)
- 1H-Indazol-3-amine, 5-[(3-methoxyphenyl)methyl]- (CAS 1956365-13-1)
- n-Methyl-2-(2,4,5-trimethoxyphenyl)ethan-1-amine (CAS 119522-45-1)
- N-butyl-6-chloro-N-ethyl-2-methylpyrimidin-4-amine (CAS 175140-68-8)
- 2,3,3-Trimethyl-3H-indol-7-amine (CAS 19363-28-1)
- 2,5-Dichloro-4-(fluorosulfonyl)phenyl 4-nitrobenzoate (CAS 23383-86-0)
- 3-(1-(4-(Isopropylamino)phenyl)piperidin-4-yl)propan-1-ol (CAS 865075-37-2)
- N-Cyclopropyltetrahydrofuran-3-amine (CAS 1342221-69-5)
- Semaglutide impurity 64 (CAS CATO-C4X-222664)
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