Calcium (S)-5-oxopyrrolidine-2-carboxylate CAS 31377-05-6
| CAS No. | 31377-05-6 |
| Molecular Formula | 2*C5H6NO3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Calcium (S)-5-oxopyrrolidine-2-carboxylate (CAS 31377-05-6) is a high-purity analytical reference standard with the molecular formula C5H6NO3Ca and a molecular weight of 168.19 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Calcium (S)-5-oxopyrrolidine-2-carboxylate is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 168.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | 2*C5H6NO3 Ca |
| Molecular Weight | 168.19 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 1 |
Recommended Standards
- N-(6-Amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)-3,5-di-tert-butyl-4-hydroxybenzamide (CAS 595558-79-5)
- 6,7-Dichloro-2-methyl-1H-indole-3-acetic Acid (CAS 25177-63-3)
- Phenyl n-(4-acetylphenyl)carbamate (CAS 99134-77-7)
- Dydrogesterone Impurity 22 (CAS CATO-C4X-218322)
- 2-Acetamido-9H-fluoren-9-yl acetate (CAS 108973-47-3)
- 5-isobutyl-2-methyl-4-nitro-pyrazole-3-carbonyl chloride (CAS 2639995-96-1)
- 3-Bromomethyl-2-hydroxy-4-(trifluoromethyl)pyridine (CAS 1227502-08-0)
- 2-(3-((3-(Benzyloxy)-3-oxopropyl)amino)pyrrolidin-1-yl)acetic acid (CAS 1353957-62-6)
- PX-866 (CAS 502632-66-8)
- Serpent Peptide 2AcOH (CAS 823202-99-9(free base))
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