Description

Methyl 2-(Dihydro-2H-Pyran-4(3H)-Ylidene)Acetate is a versatile, high-purity chemical intermediate featuring a reactive dihydropyranylidene moiety. This compound is valued for its role as a key building block in the synthesis of complex heterocyclic and pharmaceutical molecules, enabling efficient and scalable production pathways. It is primarily sought by R&D chemists and process development teams in the pharmaceutical, agrochemical, and advanced materials sectors for constructing novel molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds containing fused or spiro heterocyclic systems.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides, leveraging its reactive scaffold for structural diversification.
• Organic Synthesis Building Block: Serves as a versatile dienophile or Michael acceptor in cycloaddition and conjugate addition reactions for constructing complex organic molecules.
• Material Science Research: Investigated as a monomer or functional additive in the development of specialty polymers and advanced organic materials.
• Chemical Research & Development: Employed in academic and industrial R&D for methodology development and the exploration of new chemical spaces.
• Flavor & Fragrance Industry: Potential intermediate for synthesizing specific aroma chemicals and flavoring agents with complex oxygenated structures.

Basic Information

Product Name	Methyl 2-(Dihydro-2H-Pyran-4(3H)-Ylidene)Acetate
CAS No.	138302-49-5
Molecular Formula	C8H12O3
Molecular Weight	156.18 g/mol
Synonyms	Methyl 2-(3,4-dihydro-2H-pyran-4-ylidene)acetate; 2-(Dihydro-2H-pyran-4(3H)-ylidene)acetic acid methyl ester; Methyl (dihydro-2H-pyran-4(3H)-ylidene)acetate; 4-Methylenetetrahydro-2H-pyran-4-acetic acid methyl ester; 4-Methylene-4H-pyran-3-ol, acetate (chemical class); Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our Methyl 2-(Dihydro-2H-Pyran-4(3H)-Ylidene)Acetate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for all commercial shipments to support your quality assurance and regulatory compliance 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 strong bases and incompatible materials such as strong oxidizing agents. The container should be kept tightly sealed to prevent moisture absorption and potential degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 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.