Description

2-Methyl-1H-Indole-7-Sulfonic Acid is a specialized indole derivative functionalized with a sulfonic acid group, making it a valuable building block in advanced organic synthesis. Its unique structure provides both the aromatic indole core and a strongly acidic, water-solubilizing sulfonate moiety, enabling its use in the creation of complex molecules with specific functional properties. This compound is primarily utilized by research institutions and industrial R&D departments in the pharmaceutical and fine chemical sectors for developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly those targeting neurological and oncological pathways where the indole scaffold is prevalent.
• Dye and Pigment Synthesis: Acts as a crucial intermediate for manufacturing advanced sulfonated dyes and pigments, enhancing water solubility and color fastness.
• Agrochemical Research: Used in the development of new generation herbicides and plant growth regulators that require specific acidic and aromatic functionalities.
• Material Science: Building block for creating functional polymers and organic electronic materials where sulfonic acid groups can impart conductivity or self-assembly properties.
• Bioconjugation Chemistry: The reactive sulfonic acid group allows for conjugation strategies in biochemical probes and diagnostic agent development.
• Catalyst Ligand Synthesis: Serves as a precursor for designing specialized ligands used in homogeneous catalysis.

Basic Information

Product Name	2-Methyl-1H-Indole-7-Sulfonic Acid
CAS No.	67786-22-5
Molecular Formula	C9H9NO3S
Molecular Weight	211.24 g/mol
Synonyms	7-Sulfo-2-methylindole; 2-Methyl-7-indolesulfonic Acid; 2-Methylindole-7-sulfonic Acid; 1H-Indole-7-sulfonic acid, 2-methyl-; 2-Methyl-1H-indole-7-sulfonate; 2-Methyl-7-sulfoindole; 7-Sulfonato-2-methylindole
EINECS	Contact for details

Quality Control

Our 2-Methyl-1H-Indole-7-Sulfonic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to light tan powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.