Description

2H-Pyran-5-Carbonyl Chloride, 3,4-Dihydro- (6Ci,9Ci) is a versatile and reactive chemical intermediate, specifically an acid chloride derivative of a dihydropyran. This compound is valued for its role as a key building block in sophisticated organic synthesis, enabling the introduction of the dihydropyranoyl moiety into target molecules. It is primarily sought after by research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors for constructing complex heterocyclic frameworks and active pharmaceutical ingredients (APIs).

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of novel drug candidates, particularly those containing dihydropyran or tetrahydropyran ring systems common in bioactive molecules.
• Agrochemical Synthesis: Used in the research and development of new pesticides and herbicides, where its reactive carbonyl chloride group facilitates the creation of amide or ester linkages.
• Fine Chemical Production: Serves as a specialized building block for manufacturing complex fine chemicals and custom synthesis projects requiring high-purity intermediates.
• Material Science Research: Employed in the development of advanced polymers and functional materials, where its structure can be incorporated to modify material properties.
• Academic & Industrial R&D: A valuable reagent for methodological chemistry research, exploring new synthetic pathways and catalytic processes in both university and corporate laboratories.

Basic Information

Item	Detail
Product Name	2H-Pyran-5-Carbonyl Chloride, 3,4-Dihydro- (6Ci,9Ci)
CAS No.	98198-84-6
Molecular Formula	C6H7ClO2
Molecular Weight	146.57 g/mol
Synonyms	3,4-Dihydro-2H-pyran-5-carbonyl chloride; 5-Chlorocarbonyl-3,4-dihydro-2H-pyran; Dihydro-2H-pyran-5-carbonyl chloride; 2H-Pyran-5-carbonyl chloride, 3,4-dihydro-; Tetrahydro-2H-pyran-5-carbonyl chloride (related); 3,4-Dihydro-2H-pyran-5-carboxylic acid chloride
EINECS	Contact for details

Quality Control

Our production of 2H-Pyran-5-Carbonyl Chloride, 3,4-Dihydro- (6Ci,9Ci) adheres to stringent internal quality protocols to ensure batch-to-batch consistency and high purity. All materials are characterized using advanced analytical techniques including NMR, HPLC, and GC. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, alcohols, and amines.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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