2-(4-Methylbenzenesulfonamido)benzoic acid CAS 6311-23-5
| CAS No. | 6311-23-5 |
| Molecular Formula | C14H13NO4S |
| Molecular Weight | 291.32 g/mol |
| 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.
2-(4-Methylbenzenesulfonamido)benzoic acid (CAS 6311-23-5) is a high-purity analytical reference standard with the molecular formula C14H13NO4S and a molecular weight of 291.32 g/mol.
Structurally, 2-(4-Methylbenzenesulfonamido)benzoic acid (C14H13NO4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 291.32 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).
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 | C14H13NO4S |
| Molecular Weight | 291.32 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methylbenzenesulfonamido Standards
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- 2-[2-(4-methylbenzenesulfonamido)acetamido]acetic acid (CAS 4703-34-8)
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Recommended Standards
- 2-((2-((Furan-2-ylmethyl)amino)-2-oxoethyl)thio)benzoic acid (CAS 380541-20-8)
- 2-(N-methylphenylsulfonamido)benzoic acid (CAS 34837-68-8)
- 1-Methyl-4-((4-nitrobenzyl)sulfonyl)benzene (CAS 61081-32-1)
- 2-[methyl(phenyl)sulfamoyl]benzoic acid (CAS 26638-45-9)
- <I>N</I>,<I>N</I>′-Bis(salicylidene)-1,3-propanediamine (CAS 120-70-7)
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- 3-Quinolin-3-ylphenol (CAS 893737-06-9)
- 2-((Piperidin-2-ylmethyl)thio)pyridine hydrochloride (CAS 1420980-77-3)
- PSS-Trivinylsilyloxy-Heptacyclopentyl substituted (CAS 352538-79-5)
- Potassiumhexafluoronickelate(IV) (CAS 17218-47-2)
- 3-Fluoro-2-methyl-4-(methylsulfonyl)benzoic acid (CAS 118939-18-7)
- 2,5,8,11,14,17,20,23-Octaoxahexacosan-26-oic Acid (CAS 1093647-41-6)
- 3-Demethyl Mescaline (CAS 16046-07-4)
- Influenza PR8 Hemagglutinin Peptide (110-119) (H-6312.0005) (CAS 132031-50-6)
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