Description

1,2-Benzisoxazole-3-Carboxaldehyde (9Ci) is a versatile heterocyclic aldehyde building block of significant interest in advanced organic synthesis. Its unique fused-ring structure containing both an isoxazole and an aldehyde functional group makes it a critical precursor for constructing complex molecules. This compound is primarily sought after by research chemists and process development scientists in the pharmaceutical and agrochemical industries for the development of new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the synthesis of novel drug candidates, particularly those targeting the central nervous system (CNS).
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides due to its bioactive heterocyclic core.
• Ligand and Catalyst Synthesis: Employed for constructing specialized chelating ligands and organocatalysts used in asymmetric synthesis.
• Material Science Precursor: Acts as a building block for organic electronic materials, such as those used in OLEDs or conductive polymers.
• Chemical Biology Probes: Utilized in the design and synthesis of molecular probes for studying enzyme function and biological pathways.
• Custom Synthesis and Scale-Up: A starting material for contract research organizations (CROs) and CDMOs offering bespoke chemical synthesis services.

Basic Information

Product Name	1,2-Benzisoxazole-3-Carboxaldehyde (9Ci)
CAS No.	84395-93-7
Molecular Formula	C8H5NO2
Molecular Weight	147.13 g/mol
Synonyms	1,2-Benzisoxazole-3-carboxaldehyde; 1,2-Benzisoxazole-3-carbaldehyde; 3-Formyl-1,2-benzisoxazole; Benzisoxazole-3-carboxaldehyde; 84395-93-7; 1,2-Benzisoxazol-3-yl-methanal
EINECS	Contact for details

Quality Control

Every batch of 1,2-Benzisoxazole-3-Carboxaldehyde is produced and tested under a strict quality management system. We ensure high purity and consistency suitable for research and development applications. Comprehensive analytical testing, including HPLC, GC, and NMR, is performed to verify identity and purity. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee reliable and reproducible performance in your synthetic workflows.

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). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Off-white to light yellow 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.