4-Chloro-3-(n-(pyridin-3-ylmethyl)sulfamoyl)benzoic acid CAS 731797-74-3
| CAS No. | 731797-74-3 |
| Molecular Formula | C13H11ClN2O4S |
| Molecular Weight | 326.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4-Chloro-3-(n-(pyridin-3-ylmethyl)sulfamoyl)benzoic acid (C13H11ClN2O4S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone 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.
4-Chloro-3-(n-(pyridin-3-ylmethyl)sulfamoyl)benzoic acid (CAS 731797-74-3) is a high-purity analytical reference standard with the molecular formula C13H11ClN2O4S and a molecular weight of 326.76 g/mol.
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 | C13H11ClN2O4S |
| Molecular Weight | 326.76 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 2-Chloro-N-{4-[(pyrimidin-2-yl)sulfamoyl]phenyl}acetamide (CAS 104246-28-8)
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- 2-Chloro-6-((4,6-dimethoxypyrimidin-2-yl)thio)benzoic acid (CAS 123342-93-8)
- 4-Chloro-2-[2-(4-methyl-4H-[1,2,4]triazol-3-ylsulfanyl)-acetylamino]-benzoic acid (CAS 565166-34-9)
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Recommended Standards
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- 4-(Ethylamino)butanoic acid (CAS 76572-84-4)
- 2-(4-Methylsulfonyl-2-nitrophenyl)malondialdehyde (CAS 197251-71-1)
- 2-((2-Methylquinolin-8-yl)oxy)acetamide (CAS 3135-32-8)
- 1-(5-(Naphthalen-2-yl)-1-tosyl-1H-pyrrol-2-yl)ethan-1-one (CAS 827024-11-3)
- 4-[(2-chloro-4-fluorobenzyl)oxy]-3-methoxybenzamide (CAS 1706463-09-3)
- 2'-Chloro-5'-methyl-2,3,5,6-tetrahydrospiro[pyran-4,7'-pyrrolo[3,2-d]pyrimidin]-6'(5'H)-one (CAS 2646731-52-2)
- Galanin (1-13)-Neuropeptide Y (25-36) amide (CAS 147138-51-0)
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