Description

2H-Pyran-2-One, 3,5-Dibromo-5,6-Dihydro- is a specialized brominated lactone derivative, serving as a high-value synthetic intermediate in advanced organic chemistry. Its unique halogenated structure makes it a critical building block for constructing complex molecular frameworks, particularly in pharmaceutical and agrochemical research. This compound is essential for R&D chemists and process development scientists working on novel active ingredients and fine chemical synthesis.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), especially those requiring brominated heterocyclic cores.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and pesticides, leveraging its reactive bromine atoms for structural diversification.
• Organic Synthesis Building Block: Employed in complex organic transformations, including cross-coupling reactions and cyclization processes to create fused ring systems.
• Material Science Research: Potential monomer or modifier in the development of specialty polymers and advanced functional materials.
• Academic & Industrial R&D: Serves as a valuable reagent for methodological studies and exploring new chemical spaces in discovery chemistry.

Basic Information

Product Name	2H-Pyran-2-One, 3,5-Dibromo-5,6-Dihydro-
CAS No.	137776-72-8
Molecular Formula	C5H4Br2O2
Molecular Weight	255.89 g/mol
Synonyms	3,5-Dibromo-5,6-dihydro-2H-pyran-2-one; 5,6-Dihydro-3,5-dibromo-2H-pyran-2-one; 3,5-Dibromodihydropyran-2-one; Dihydro-3,5-dibromo-2H-pyran-2-one; 2H-Pyran-2-one, 5,6-dihydro-3,5-dibromo-; 137776-72-8 (CAS); Brominated dihydropyranone
EINECS	Contact for details

Quality Control

Our 2H-Pyran-2-One, 3,5-Dibromo-5,6-Dihydro- is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles. We adhere to cGMP principles where applicable, and our analytical methods, including HPLC, GC, and NMR, are validated to provide reliable specifications for research and development use.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (15-25°C). Keep away from strong bases and reducing agents. For long-term storage, consider inert atmosphere conditions to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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