Description

Phthalide-6-Carboxylic Acid is a versatile organic compound and a key synthetic intermediate in fine chemical manufacturing. Its unique fused-ring structure makes it a valuable building block for constructing complex molecules in pharmaceutical and agrochemical research. This compound is primarily sought by R&D chemists and process development scientists in the life sciences and specialty chemical sectors.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds with fused-ring systems.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and plant growth regulators.
• Organic Synthesis Building Block: Serves as a versatile starting material for constructing complex organic molecules in academic and industrial research laboratories.
• Dye and Pigment Intermediate: Employed in the development of specialized dyes and high-performance pigments.
• Material Science Research: Investigated as a monomer or additive for creating novel polymers with specific optical or electronic properties.
• Chemical Reference Standard: Used as an analytical standard in quality control laboratories for method development and validation.

Basic Information

Product Name	Phthalide-6-Carboxylic Acid
CAS No.	4743-61-7
Molecular Formula	C9H6O4
Molecular Weight	178.14 g/mol
Synonyms	6-Carboxyphthalide; 1,3-Dihydro-3-oxo-1-isobenzofurancarboxylic Acid; 3-Oxo-1,3-dihydro-2-benzofuran-1-carboxylic Acid; 6-Carboxy-1(3H)-isobenzofuranone; Phthalide-1-carboxylic Acid (6-isomer); 1-Carboxy-3-phthalide; 3-Oxophthalan-1-carboxylic Acid
EINECS	225-254-8

Quality Control

Our Phthalide-6-Carboxylic Acid is manufactured 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 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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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