4-Hydroxy-1-(4-nitrobenzenesulfonyl)pyrrolidine-2-carboxylic acid CAS 91088-77-6
| CAS No. | 91088-77-6 |
| Molecular Formula | C11H12N2O7S |
| Molecular Weight | 316.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Hydroxy-1-(4-nitrobenzenesulfonyl)pyrrolidine-2-carboxylic acid.
CATO supplies 4-Hydroxy-1-(4-nitrobenzenesulfonyl)pyrrolidine-2-carboxylic acid (CAS 91088-77-6), a certified reference material (molecular formula C11H12N2O7S, MW 316.29 g/mol) for analytical method development and quality control.
4-Hydroxy-1-(4-nitrobenzenesulfonyl)pyrrolidine-2-carboxylic acid (C11H12N2O7S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C11H12N2O7S |
| Molecular Weight | 316.29 g/mol |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
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