2,3,3-Trimethyl-3H-indole-5-sulfonic acid CAS 132557-72-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 132557-72-3 |
| Molecular Formula | C11H13NO3S |
| Molecular Weight | 239.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,3,3-Trimethyl-3H-indole-5-sulfonic acid (CAS 132557-72-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C11H13NO3S. Molecular weight: 239.29 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C11H13NO3S |
| Molecular Weight | 239.29 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-Acetamido-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylic acid (CAS 13130-43-3)
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- n-(Sec-butyl)-3-(2-fluorophenoxy)propanamide (CAS 1311931-36-8)
- 7-Bromo-2,3-dihydro-1H-inden-4-amine (CAS 77812-12-5)
- 2-(5-Methyl-3-trifluoromethyl-pyrazol-1-yl)-propionyl chloride (CAS 1171649-27-6)
- 1-{2-[(tert-butyldimethylsilyl)oxy]ethyl}-4-(3-methoxypropyl)-1H-1,2,3-triazole (CAS 2522733-02-2)
- 2-Chloro-1-nitro-3,5-bis(trifluoromethyl)benzene (CAS 654-55-7)
- 6-Amino-N-phenyl-[1,3]dioxolo[4,5-g]quinoline-7-carboxamide (CAS 131336-38-4)
- Methyl 4-(benzylamino)butanoate (CAS 157992-68-2)
- Semaglutide Sodium Salt (CAS CATO-C4X-222620)
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