Description

2-Phenylindole-5-Sulfonic Acid is a specialized organic sulfonic acid derivative that serves as a key intermediate in advanced chemical synthesis. Its value lies in the unique indole core functionalized with both phenyl and sulfonic acid groups, enabling precise molecular modifications. This compound is essential for researchers and manufacturers in the pharmaceutical and fine chemical industries, particularly for developing active pharmaceutical ingredients (APIs) and high-performance dyes.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of novel indole-based drug candidates and active pharmaceutical ingredients (APIs).
• Fine Chemical Synthesis: Used in the preparation of complex organic molecules for research and development in medicinal chemistry.
• Dye and Pigment Manufacturing: Acts as a precursor for sulfonated dyes and pigments, contributing to color fastness and solubility.
• Biochemical Research: Employed as a reagent or standard in biochemical studies and analytical method development.
• Material Science: Investigated for use in the development of specialty polymers and functional materials.

Basic Information

Product Name	2-Phenylindole-5-Sulfonic Acid
CAS No.	27391-34-0
Molecular Formula	C14H11NO3S
Molecular Weight	273.31 g/mol
Synonyms	5-Sulfo-2-phenylindole; 2-Phenyl-1H-indole-5-sulfonic acid; 2-Phenylindole-5-sulphonic acid; 1H-Indole-5-sulfonic acid, 2-phenyl-; 2-Phenyl-5-indolesulfonic acid; NSC 403119; 27391-34-0; 2-Phenyl-1H-indole-5-sulfonate
EINECS	Contact for details

Quality Control

Our 2-Phenylindole-5-Sulfonic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and industrial use. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee traceability and consistency.

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 incompatible materials such as strong bases and oxidizing agents.

Specification

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

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