Description

5-Sulpho-o-Anisic Acid is a key sulfonated aromatic acid derivative, serving as a versatile intermediate in advanced chemical synthesis. Its value lies in its unique molecular structure, which combines a carboxylic acid group with a sulfonic acid group on an anisole backbone, enabling precise functionalization. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty dye industries seeking to develop high-performance active ingredients and colorants.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the production of modern herbicides and plant growth regulators, where its sulfonic acid group enhances solubility and bioavailability.
• Dye and Pigment Manufacturing: Acts as an intermediate for creating water-soluble azo dyes and high-value pigments, improving color fastness and application properties.
• Chemical Research & Development: Employed as a standard or reagent in organic synthesis for introducing sulfonic acid functionality into complex molecules.
• Liquid Crystal & Electronic Materials: Serves as a precursor in the synthesis of specialty monomers for advanced polymers and electronic chemicals.
• Chelating Agent Precursor: Used in the manufacture of specialized chelating agents for metal ion sequestration in industrial processes.

Basic Information

Product Name	5-Sulpho-o-Anisic Acid
CAS No.	34556-95-1
Molecular Formula	C8H8O6S
Molecular Weight	232.21 g/mol
Synonyms	5-Sulfosalicylic Acid 2-Methyl Ether; 2-Methoxy-5-sulfobenzoic Acid; 5-Sulfo-2-methoxybenzoic Acid; o-Anisic Acid-5-sulfonic Acid; 2-Methoxy-5-sulfobenzoic Acid; 5-Sulfonyl-o-anisic Acid; 5-Sulfoanthranilic Acid Methyl Ether; Benzoic acid, 2-methoxy-5-sulfo-
EINECS	Contact for details

Quality Control

Our 5-Sulpho-o-Anisic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets exacting standards. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee traceability and batch-to-batch consistency for your critical processes.

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, which can affect product quality and handling.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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