(2R,5S)-5-Ethynylpyrrolidine-2-carboxylic acid CAS 138957-97-8
| CAS No. | 138957-97-8 |
| Molecular Formula | C7H9NO2 |
| Molecular Weight | 139.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(2R,5S)-5-Ethynylpyrrolidine-2-carboxylic acid (C7H9NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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).
(2R,5S)-5-Ethynylpyrrolidine-2-carboxylic acid (CAS 138957-97-8), molecular formula C7H9NO2 and molecular weight 139.15 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.
CATO manufactures (2R,5S)-5-Ethynylpyrrolidine-2-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H9NO2 |
| Molecular Weight | 139.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 1 |
Recommended Standards
- 2-ethyl-1H-pyrrole-3-carboxylic acid (CAS 1368126-32-2)
- 1-Methyl-1,4-dihydropyridine-3-carboxylic acid (CAS 140201-08-7)
- 3-(Propan-2-ylidene)pyrrolidine-2,5-dione (CAS 13678-37-0)
- 2,3,4,7-TEtrahydro-1h-furo[3,4-b]pyridin-5-one (CAS 1403907-43-6)
- Ecopipam-13C6 (CAS 112108-01-7)
- N-Isobutyl-4-methoxybenzenesulfonamide (CAS 172738-60-2)
- N2-isobutyl-5-(trifluoromethyl)pyridine-2,3-diamine (CAS 1437457-94-7)
- 3-Iodo-1-methyl-1H-pyrazol-5-amine hydrochloride (CAS 2680527-79-9)
- 2-(3-(4-Hydroxyphenyl)-4-(4-methoxyphenyl)isoxazol-5-yl)acetic acid (CAS 112453-43-7)
- 1185101-22-7 4-[3-[4-(2-Chlorophenyl)-9-methyl-6H-thieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepin-2-yl]-1-oxopropyl]morpholine-d8 Apafant-d8 WEB 2086-d8 WEB 2086BS-d8 (CAS 1185101-22-7)
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- 1,12-Dodecanedicarboxylic Acid (CAS 821-38-5)
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