Sodium 2,3,3-trimethyl-3H-indole-5-sulfonate CAS 287188-58-3
| CAS No. | 287188-58-3 |
| Molecular Formula | C11H12NO3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 261.27 g/mol gives Sodium 2,3,3-trimethyl-3H-indole-5-sulfonate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Sodium 2,3,3-trimethyl-3H-indole-5-sulfonate (CAS 287188-58-3), a certified reference material (molecular formula C11H12NO3SNa, MW 261.27 g/mol) for analytical method development and quality control.
The molecular framework of Sodium 2,3,3-trimethyl-3H-indole-5-sulfonate (C11H12NO3SNa) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), Sodium 2,3,3-trimethyl-3H-indole-5-sulfonate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C11H12NO3S Na |
| Molecular Weight | 261.27 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) | 6.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Sodium Standards
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Recommended Standards
- Tert-butyl 4-(6-chloropyridin-2-yl)piperazine-1-carboxylate (CAS 1239369-20-0)
- N-Boc-5-phenylpiperidine-3-carboxylic Acid (CAS 885274-99-7)
- (1R,2R)-N1,N2-Dimethyl-1,2-di-p-tolylethane-1,2-diamine (CAS 2444430-62-8)
- Bromo-PEG1-NH2 (hydrobromide) (CAS 2287287-20-9)
- 4,5,9,10-Tetrabromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone (CAS 299962-88-2)
- tert-Butyl N-(4-bromo-3-fluorophenyl)-N-methylcarbamate (CAS 1881330-84-2)
- 3-(Cyclopropylsulfamoyl)benzene-1-sulfonyl chloride (CAS 930395-72-5)
- 8'-Fluoro-1',2,3,4',5,6-hexahydro-2'H-spiro[pyran-4,3'-quinoline] (CAS 1439902-17-6)
- Vonoprazan Impurity 233 (CAS CATO-C4X-1020233)
- Semaglutide impurity 48 (CAS CATO-C4X-222648)
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