(2S,4R)-4-(Carboxymethyl)pyrrolidine-2-carboxylic acid CAS 168034-55-7
| CAS No. | 168034-55-7 |
| Molecular Formula | C7H11NO4 |
| Molecular Weight | 173.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(2S,4R)-4-(Carboxymethyl)pyrrolidine-2-carboxylic acid (CAS 168034-55-7) is a high-purity analytical reference standard with the molecular formula C7H11NO4 and a molecular weight of 173.17 g/mol.
Structurally, (2S,4R)-4-(Carboxymethyl)pyrrolidine-2-carboxylic acid (C7H11NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 173.17 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).
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.
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 | C7H11NO4 |
| Molecular Weight | 173.17 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, water |
| 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.) | 2005 |
| Nitrogen Atoms | 1 |
Recommended Standards
- (2R,4S)-4-(Carboxymethyl)pyrrolidine-2-carboxylic acid (CAS 168034-54-6)
- 4-Hydroxyquinoline-2-carbaldehyde (CAS 168141-99-9)
- (2R,4R)-4-(Carboxymethyl)pyrrolidine-2-carboxylic acid (CAS 168034-53-5)
- N-(6-Cyanopyridin-2-yl)acrylamide (CAS 1691090-01-3)
- 1-(2-(2-Chlorophenoxy)ethyl)-2-methyl-1H-indole-3-carbaldehyde (CAS 433241-35-1)
- 6-Cyano-5-cyclopropoxypyridine-3-sulfonamide (CAS 1243479-76-6)
- 4-(2-Methoxyphenyl)-L-phenylalanine (CAS 340292-00-4)
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- 2-Cyclohexyl-5,6,7,8-tetrahydropyrido[3,4-d]pyridazin-1(2H)-one (CAS 1447949-01-0)
- Carboprost Trometamol EP Impurity B Tromethamine Salt (CAS CATO-C4X-21031)
- Semaglutide impurity 244(Fmoc-His(Fmoc)-Aib-OH) (CAS CATO-C4X-2226244)
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