Description

4-(3-Methyl-Isothiazol-5-Yl)-Benzoic Acid CAS NO 1261236-29-6 is a high-purity, heterocyclic benzoic acid derivative that serves as a critical building block in advanced organic synthesis. This compound is valued for its unique molecular architecture, which combines a benzoic acid moiety with a substituted isothiazole ring, enabling precise chemical modifications. It is primarily sought after by research and development chemists in the pharmaceutical and agrochemical industries for the creation of novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new drug candidates, particularly for anti-infective and central nervous system (CNS) targeted therapies.
• Agrochemical Synthesis: Used in the development of next-generation herbicides, fungicides, and insecticides, leveraging the bioactivity of the isothiazole core.
• Material Science Research: Serves as a precursor for functional organic materials, including liquid crystals, organic semiconductors, and metal-organic frameworks (MOFs).
• Chemical Biology Probes: Utilized in the design and synthesis of molecular probes for studying enzyme function and biological pathways.
• Custom Synthesis & Contract Manufacturing: A fundamental starting material for custom chemical synthesis services catering to specialized R&D projects.

Basic Information

Product Name	4-(3-Methyl-Isothiazol-5-Yl)-Benzoic Acid
CAS No.	1261236-29-6
Molecular Formula	C11H9NO2S
Molecular Weight	219.26 g/mol
Synonyms	4-(3-Methyl-1,2-thiazol-5-yl)benzoic acid; 5-(4-Carboxyphenyl)-3-methylisothiazole; Benzoic acid, 4-(3-methyl-5-isothiazolyl)-; 1261236-29-6; 4-(3-Methylisothiazol-5-yl)benzoic acid; 3-Methyl-5-(4-carboxyphenyl)isothiazole; 4-(3-Methyl-1,2-thiazol-5-yl)benzoic acid
EINECS	Contact for details

Quality Control

Our 4-(3-Methyl-Isothiazol-5-Yl)-Benzoic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets the high standards required for research and development applications. Certificates of Analysis (COA) detailing batch-specific results are provided and available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%

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