Description

4-(1,2-Dihydro-2-Oxo-3H-Indol-3-Ylidene)-4-Hydroxy-2-Butenoic Acid 1,4-Lactone is a specialized heterocyclic organic compound featuring a fused indole-lactone structure, making it a valuable synthetic intermediate. This compound matters for its role as a key building block in the synthesis of complex molecules, particularly in advanced pharmaceutical research and fine chemical manufacturing. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for creating novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and anti-inflammatory pathways.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and plant growth regulators that leverage its unique heterocyclic scaffold.
• Organic Synthesis Building Block: Employed in academic and industrial laboratories for constructing complex indole-based and lactone-containing molecular architectures.
• Dye and Pigment Chemistry: Acts as an intermediate in the production of specialized dyes and organic pigments due to its conjugated system.
• Material Science Research: Investigated for potential use in organic electronics and as a component in advanced polymeric materials.

Basic Information

Item	Details
Product Name	4-(1,2-Dihydro-2-Oxo-3H-Indol-3-Ylidene)-4-Hydroxy-2-Butenoic Acid 1,4-Lactone
CAS No.	13191-62-3
Molecular Formula	C12H7NO3
Molecular Weight	213.19 g/mol
Synonyms	4-Hydroxy-4-(2-oxo-1,2-dihydro-3H-indol-3-ylidene)but-2-enoic acid 1,4-lactone; 3-(1,2-Dihydro-2-oxo-3H-indol-3-ylidene)-4-hydroxy-2-buten-4-olide; Isatin-3-ylidene lactone; 3-(2-Oxo-1,2-dihydro-indol-3-ylidene)-dihydro-furan-2-one; 13191-62-3; (3Z)-3-(2-Oxo-1,2-dihydro-3H-indol-3-ylidene)dihydrofuran-2(3H)-one
EINECS	Contact for details

Quality Control

Our 4-(1,2-Dihydro-2-Oxo-3H-Indol-3-Ylidene)-4-Hydroxy-2-Butenoic Acid 1,4-Lactone is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and development applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance protocols.

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). Keep away from incompatible materials. Due to its light-sensitive nature, handling should be conducted under appropriate conditions to maintain product integrity.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
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.