Description

3A(1H)-Pentalenecarboxylic Acid, 2,3,4,5-Tetrahydro-5-Oxo-, Ethyl Ester is a specialized organic ester building block with a complex fused-ring pentalene core. This compound matters as a high-value synthetic intermediate, offering a unique structural motif for constructing advanced molecules in pharmaceutical and agrochemical research. It is primarily needed by R&D chemists and process development scientists working on novel active ingredients, particularly in the areas of medicinal chemistry and crop protection.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel drug candidates, especially those targeting complex biological pathways.
• Agrochemical Research: Used in developing new active ingredients for herbicides, fungicides, or insecticides, leveraging its unique bicyclic structure.
• Organic Synthesis Building Block: Provides a versatile scaffold for constructing complex polycyclic or heterocyclic compounds in academic and industrial laboratories.
• Material Science Research: Potential intermediate for creating specialized organic ligands or monomers for advanced polymeric materials.
• Chemical Biology Probe Development: Utilized in the design and synthesis of molecular probes for studying enzyme function or cellular processes.

Basic Information

Product Name	3A(1H)-Pentalenecarboxylic Acid, 2,3,4,5-Tetrahydro-5-Oxo-, Ethyl Ester
CAS No.	65898-66-0
Molecular Formula	C12H14O3
Molecular Weight	206.24 g/mol
Synonyms	Ethyl 2,3,4,5-tetrahydro-5-oxo-1H-pentalene-3a-carboxylate; 3a(1H)-Pentalenecarboxylic acid, 2,3,4,5-tetrahydro-5-oxo-, ethyl ester; Ethyl 5-oxo-2,3,4,5-tetrahydro-1H-pentalene-3a-carboxylate; 1H-Pentalene-3a-carboxylic acid, 2,3,4,5-tetrahydro-5-oxo-, ethyl ester; Ethyl tetrahydro-5-oxo-1H-pentalene-3a-carboxylate
EINECS	Contact for details

Quality Control

Our 3A(1H)-Pentalenecarboxylic Acid, 2,3,4,5-Tetrahydro-5-Oxo-, Ethyl Ester is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by spectroscopic methods (NMR, IR), to ensure it meets the high standards required for research and development applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong bases and incompatible organic solvents. 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
Purity (HPLC)	≥ 97.0%
Assay	≥ 97.0% (by titration)
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 1.0%
Total Impurities (HPLC)	≤ 3.0%

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