Description

4-Isoquinolinecarboxylic Acid, 6,8-Dihydroxy-, Methyl Ester (9Ci) is a specialized heterocyclic building block of significant interest in advanced organic synthesis. This compound matters for its role as a key intermediate in the development of complex molecules, particularly in pharmaceutical research and fine chemical manufacturing. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing novel active compounds and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a critical precursor in the synthesis of potential drug candidates, particularly those targeting neurological or metabolic pathways.
• Agrochemical Research: Used in the development of new herbicides, fungicides, or plant growth regulators due to its bioactive isoquinoline core.
• Ligand Synthesis: Employed in the preparation of chelating ligands for catalysis or metal-organic frameworks (MOFs).
• Fluorescent Probe Development: The dihydroxy-substituted structure makes it a candidate for developing dyes and sensors for analytical applications.
• Academic & Institutional Research: Utilized in universities and research institutes for methodological studies in heterocyclic and medicinal chemistry.
• Fine Chemical Synthesis: Acts as a building block for creating complex, high-value specialty chemicals.

Basic Information

Product Name	4-Isoquinolinecarboxylic Acid, 6,8-Dihydroxy-, Methyl Ester (9Ci)
CAS No.	754215-76-4
Molecular Formula	C11H9NO4
Molecular Weight	219.19 g/mol
Synonyms	6,8-Dihydroxy-4-isoquinolinecarboxylic acid methyl ester; Methyl 6,8-dihydroxy-4-isoquinolinecarboxylate; 6,8-Dihydroxy-4-methoxycarbonylisoquinoline; 4-Carbomethoxy-6,8-dihydroxyisoquinoline; 6,8-Dihydroxyisoquinoline-4-carboxylic acid methyl ester; 754215-76-4; Methyl 6,8-dihydroxyisoquinoline-4-carboxylate
EINECS	Contact for details

Quality Control

Our 4-Isoquinolinecarboxylic Acid, 6,8-Dihydroxy-, Methyl Ester (9Ci) is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets the high standards required for research and development. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). The compound may be light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 95.0%
Water Content	≤ 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.