Description

1-Ethyl-4-Oxo-1,4-Dihydroquinoline-3-Carboxylic Acid (Saltdata: Free) is a high-purity, versatile quinoline derivative that serves as a critical building block in advanced organic synthesis. Its value lies in its unique fused-ring structure, which provides a privileged scaffold for developing novel compounds with targeted biological and material properties. This intermediate is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel antibacterial and antiviral agents, particularly quinolone-based pharmaceuticals.
• Agrochemical Development: Used in research and production of advanced pesticides and herbicides, leveraging its heterocyclic core for bioactivity.
• Organic Synthesis Building Block: Employed in constructing complex heterocyclic compounds for material science and catalysis research.
• Research & Development: Serves as a standard or starting material in academic and industrial R&D for exploring new chemical entities.
• Fine Chemical Production: Integral to the manufacture of dyes, pigments, and other specialty fine chemicals requiring a quinoline backbone.

Basic Information

Product Name	1-Ethyl-4-Oxo-1,4-Dihydroquinoline-3-Carboxylic Acid (Saltdata: Free)
CAS No.	23789-88-0
Molecular Formula	C₁₂H₁₁NO₃
Molecular Weight	217.22 g/mol
Synonyms	1-Ethyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid; 1-Ethyl-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid; 3-Quinolinecarboxylic acid, 1,4-dihydro-1-ethyl-4-oxo-; Ethyl Norfloxacin Impurity; Norfloxacin Ethyl Impurity; 1-Ethyl-4-oxoquinoline-3-carboxylic acid; ENQCA
EINECS	Contact for details

Quality Control

Our production of 1-Ethyl-4-Oxo-1,4-Dihydroquinoline-3-Carboxylic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and reliability. The material undergoes comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to confirm identity and purity. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment, and we support compliance with cGMP and ISO 9001 standards for critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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