Description

Bicyclo[4.4.1]Undeca-1,3,5,7,9-Pentaene-2-Carbonyl Chloride (9Ci) is a highly reactive and versatile chemical building block, specifically an acid chloride derivative of a unique polycyclic aromatic system. Its core value lies in its ability to act as a key electrophilic intermediate for introducing the bicyclo[4.4.1]undecapentaene moiety into more complex molecular architectures. This compound is essential for researchers and process chemists in advanced organic synthesis, particularly for developing novel materials, pharmaceuticals, and specialty chemicals where its rigid, conjugated framework is desired.

Application

• Pharmaceutical Intermediate: Serves as a critical precursor in the synthesis of novel drug candidates, especially those targeting central nervous system (CNS) disorders or requiring complex polycyclic scaffolds.
• Advanced Material Science: Used in the development of organic semiconductors, conductive polymers, and non-linear optical (NLO) materials due to its extended π-conjugation and rigid structure.
• Ligand and Catalyst Synthesis: Acts as a starting material for creating sophisticated ligands used in asymmetric catalysis and organometallic chemistry.
• Agrochemical Research: Employed in the design and synthesis of new active ingredients with unique modes of action.
• Dye and Pigment Chemistry: Functions as a key intermediate for producing novel dyes and pigments with specific light-absorption or fluorescence properties.
• Academic & R&D: A valuable tool for synthetic methodology development and exploring new chemical space in university and industrial research laboratories.

Basic Information

Product Name	Bicyclo[4.4.1]Undeca-1,3,5,7,9-Pentaene-2-Carbonyl Chloride (9Ci)
CAS No.	106817-62-3
Molecular Formula	C12H7ClO
Molecular Weight	202.64 g/mol
Synonyms	Bicyclo[4.4.1]undeca-1,3,5,7,9-pentaene-2-carbonyl chloride; 2-Bicyclo[4.4.1]undeca-1,3,5,7,9-pentaenecarbonyl chloride; 1,3,5,7,9-Cycloundecapentaene-2-carbonyl chloride, bicyclo[4.4.1] derivative; (9CI) Bicyclo[4.4.1]undeca-1,3,5,7,9-pentaene-2-carbonyl chloride; Bicyclo[4.4.1]undecapentaenyl-2-carbonyl chloride; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our Bicyclo[4.4.1]Undeca-1,3,5,7,9-Pentaene-2-Carbonyl Chloride (9Ci) is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity for research and development applications. Each lot is analyzed using advanced spectroscopic and chromatographic techniques. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 15-25°C). This compound is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) to prevent decomposition. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline solid or powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95% (Research Grade)
Water Content (KF)	≤ 0.5%

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