Description

(E)-o-Chlorocinnamic Acid CAS NO 939-58-2 is a high-purity, isomerically defined organic building block characterized by its chlorinated aromatic ring and α,β-unsaturated carboxylic acid functionality. This compound is valued for its role as a versatile synthon in advanced organic synthesis, enabling the construction of complex molecular architectures. It is primarily sought by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for applications in medicinal chemistry and material science.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs) and bioactive molecules, particularly those requiring a halogenated cinnamic acid scaffold.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and plant growth regulators.
• Liquid Crystal & OLED Materials: Serves as a building block for creating advanced organic electronic materials and liquid crystal compounds.
• Polymer Modification: Employed to introduce chlorophenyl groups into polymer chains, altering physical properties for specialized coatings or resins.
• Chemical Research & Development: A valuable reagent in academic and industrial R&D for studying structure-activity relationships and developing new synthetic methodologies.
• Fine Chemical Production: Integral to the multi-step synthesis of complex flavors, fragrances, and other high-value fine chemicals.

Basic Information

Product Name	(E)-o-Chlorocinnamic Acid
CAS No.	939-58-2
Molecular Formula	C9H7ClO2
Molecular Weight	182.60 g/mol
Synonyms	(E)-2-Chlorocinnamic Acid; trans-2-Chlorocinnamic Acid; (E)-3-(2-Chlorophenyl)-2-propenoic Acid; o-Chlorocinnamic Acid (trans-); 2-Chlorocinnamic Acid (E-isomer); (E)-3-(2-Chlorophenyl)acrylic Acid; trans-o-Chlorocinnamic Acid; 939-58-2
EINECS	213-357-7

Quality Control

Our (E)-o-Chlorocinnamic Acid is manufactured under a strict quality management system. Every batch is subjected to comprehensive analytical testing, including HPLC for purity and isomer content, to ensure it meets exacting specifications for research and industrial use. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming identity, purity, and compliance with the agreed specifications.

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, oxidizing agents, and heat sources.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
(E)-Isomer Content	≥ 99.0%
Melting Point	208°C - 212°C
Loss on Drying	≤ 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.