Description

2H-Pyran-5-Carboxylicacid,3,4-Dihydro-,Ethylester(9Ci) is a specialized heterocyclic ester compound with the CAS number 773134-98-8, serving as a valuable synthetic intermediate in advanced organic chemistry. Its core value lies in its functionalized pyran ring structure, which is pivotal for constructing complex molecular architectures in pharmaceutical and agrochemical research. This compound is essential for R&D chemists and process development scientists working on novel active ingredients, fine chemicals, and material science applications where precise molecular scaffolding is required.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and metabolic diseases.
• Agrochemical Synthesis: Used in the research and development of new-generation pesticides and herbicides, leveraging its heterocyclic core for bioactivity.
• Fine Chemical Production: Serves as a precursor for creating complex flavors, fragrances, and specialty chemicals requiring a dihydropyran moiety.
• Material Science Research: Employed in the development of advanced polymers and organic electronic materials due to its reactive ester functionality.
• Academic & Industrial R&D: A crucial reagent for methodological studies in organic synthesis, including cyclization and functional group transformation reactions.

Basic Information

Product Name	2H-Pyran-5-Carboxylicacid,3,4-Dihydro-,Ethylester(9Ci)
CAS No.	773134-98-8
Molecular Formula	C8H12O3
Molecular Weight	156.18 g/mol
Synonyms	Ethyl 3,4-dihydro-2H-pyran-5-carboxylate; 3,4-Dihydro-2H-pyran-5-carboxylic acid ethyl ester; 5-Carbethoxy-3,4-dihydro-2H-pyran; 2H-Pyran-5-carboxylic acid, 3,4-dihydro-, ethyl ester; Ethyl 5,6-dihydro-2H-pyran-3-carboxylate (tautomer); DHP-5-COOEt; 773134-98-8
EINECS	Contact for details

Quality Control

Our 2H-Pyran-5-Carboxylicacid,3,4-Dihydro-,Ethylester(9Ci) is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters 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 controlled room temperature (15-25°C). Keep away from heat, sparks, and open flames. For long-term storage, consider an inert atmosphere to maintain optimal stability.

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.