Description

Bicyclo[2.2.1]Hept-5-Ene-2-Carboxaldehyde, 3-Ethyl-, (2-Endo,3-Exo)- (9Ci) is a high-purity, functionalized norbornene derivative, specifically engineered as a versatile chiral building block for advanced organic synthesis. Its unique bridged bicyclic structure and strategically positioned aldehyde and ethyl groups make it a critical precursor for constructing complex molecular architectures with precise stereochemistry. This compound is essential for researchers and process chemists in the pharmaceutical, agrochemical, and specialty materials sectors, where it is used to develop novel active ingredients, ligands, and functional polymers.

Application

• Pharmaceutical Intermediate: Serves as a key chiral synthon in the synthesis of complex drug candidates, particularly for central nervous system (CNS) and antiviral therapeutics.
• Agrochemical Synthesis: Used in the development of novel, stereospecific pesticides and herbicides, leveraging its rigid norbornene scaffold for enhanced biological activity.
• Ligand and Catalyst Development: Acts as a precursor for creating chiral phosphine, amine, and N-heterocyclic carbene (NHC) ligands used in asymmetric catalysis.
• Polymer Science & Material Chemistry: A monomer for ring-opening metathesis polymerization (ROMP) to produce specialty polymers with tailored thermal and mechanical properties.
• Fine Chemical Production: Employed in multi-step syntheses of fragrances, flavors, and other high-value specialty chemicals requiring specific stereocenters.
• Academic & R&D: A valuable tool in methodological research for studying cycloaddition reactions, stereoselective transformations, and new synthetic methodologies.

Basic Information

Product Name	Bicyclo[2.2.1]Hept-5-Ene-2-Carboxaldehyde, 3-Ethyl-, (2-Endo,3-Exo)- (9Ci)
CAS No.	136655-70-4
Molecular Formula	C10H14O
Molecular Weight	150.22 g/mol
Synonyms	3-Ethylbicyclo[2.2.1]hept-5-ene-2-carboxaldehyde, endo,exo-; (2-endo,3-exo)-3-Ethyl-2-norbornenecarboxaldehyde; 3-Ethyl-5-norbornene-2-carboxaldehyde; 3-Ethyl-2-norbornene-2-carbaldehyde; Norbornene derivative, 3-ethyl-2-carboxaldehyde; Bicyclo[2.2.1]hept-5-ene-2-carboxaldehyde, 3-ethyl-; (1S,2R,4R)-3-Ethylbicyclo[2.2.1]hept-5-ene-2-carbaldehyde
EINECS	Contact for details

Quality Control

Every batch of our Bicyclo[2.2.1]Hept-5-Ene-2-Carboxaldehyde, 3-Ethyl-, (2-Endo,3-Exo)- (9Ci) is manufactured under strict quality management systems. We provide comprehensive analytical documentation, including a Certificate of Analysis (COA) detailing purity, enantiomeric/excess, and impurity profiles verified by GC, HPLC, and NMR. Our quality commitment ensures the material meets the stringent requirements for research and scale-up applications. Certificates of Analysis (COA) are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry place at 2-8°C for long-term stability. This compound is easily oxidized and light-sensitive; allow the sealed container to reach room temperature before opening to minimize moisture condensation and oxidative degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
Isomeric Purity (endo,exo)	≥ 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.