(S)-Pyrrolidine-3-carboxylic acid hydrochloride CAS 1124369-40-9
| CAS No. | 1124369-40-9 |
| Molecular Formula | C5H9NO2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(S)-Pyrrolidine-3-carboxylic acid hydrochloride (CAS 1124369-40-9), molecular formula C5H9NO2HCl and molecular weight 151.59 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (S)-Pyrrolidine-3-carboxylic acid hydrochloride (C5H9NO2HCl) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C5H9NO2 HCl |
| Molecular Weight | 151.59 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related S Standards
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- 4-Oxo-4-((3-(pyrrolidine-1-carbonyl)phenyl)amino)butanoic acid (CAS 1003683-04-2)
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- [1,2,4]Triazolo[1,5-a]pyridine-7-methanamine (CAS 1313726-30-5)
- N-Benzyl-2-chloro-N-(2,5-dioxo-1-phenylpyrrolidin-3-yl)acetamide (CAS 1858240-51-3)
- ({[Benzyl(thien-2-ylmethyl)amino]-carbonothioyl}amino)acetic acid 656815-31-5 7515AE C15H16N2O2S2 (CAS 656815-31-5)
- 3-Methyl-N-propyl-[1,2]oxazolo[5,4-d]pyrimidin-4-amine (CAS 175348-28-4)
- Semaglutide impurity 38 (CAS CATO-C4X-222638)
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