Description

2H-1-Benzopyran-2-One, 3-Bromo- is a brominated derivative of coumarin, a versatile heterocyclic scaffold widely utilized in organic synthesis and pharmaceutical research. This compound serves as a critical building block for the development of novel active molecules, particularly due to the reactivity of the bromine atom which allows for further functionalization. It is primarily sought by research chemists and process development teams in the pharmaceutical, agrochemical, and material science industries.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of potential drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Research: Used in the development of new herbicides, fungicides, and plant growth regulators.
• Organic Synthesis: Serves as a versatile electrophile in cross-coupling reactions (e.g., Suzuki, Heck) for constructing complex molecular architectures.
• Fluorescent Dye & Sensor Development: Acts as a core structure for synthesizing novel coumarin-based fluorescent probes and optical materials.
• Material Science: Building block for advanced polymers and organic electronic materials.
• Academic & Contract Research: Essential reagent for methodological studies and discovery chemistry in university and CRO laboratories.

Basic Information

Product Name	2H-1-Benzopyran-2-One, 3-Bromo-
CAS No.	939-18-4
Molecular Formula	C9H5BrO2
Molecular Weight	225.04 g/mol
Synonyms	3-Bromocoumarin; 3-Bromo-2H-chromen-2-one; 3-Bromo-1,2-benzopyrone; 3-Bromo-2H-1-benzopyran-2-one; 3-Brom-2H-chromen-2-on; 3-Bromo-coumarin; 3-Brom-1,2-benzopyron
EINECS	213-350-3

Quality Control

Our 2H-1-Benzopyran-2-One, 3-Bromo- is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure high purity and consistency. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided and available upon request to support your quality assurance and regulatory needs.

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). Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	118 - 122 °C
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.