Description

4-Mercaptocinnamic Acid is a versatile sulfur-containing aromatic carboxylic acid, serving as a critical building block in organic synthesis and materials science. Its unique structure, featuring both a thiol (-SH) and a carboxylic acid (-COOH) group, enables its use as a bifunctional linker and precursor for heterocycles and functionalized polymers. This compound is particularly valuable for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to introduce thiol or cinnamic acid moieties into target molecules.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of biologically active molecules, including potential enzyme inhibitors and drug candidates.
• Agrochemical Synthesis: Building block for creating novel pesticides and herbicides with specific modes of action.
• Polymer Modification: Acts as a functional monomer or cross-linking agent to introduce thiol groups into polymer backbones for advanced materials.
• Bioconjugation & Linker Chemistry: Utilized in the development of heterobifunctional cross-linkers for protein labeling, surface functionalization, and bioconjugate synthesis.
• Organic Synthesis: A versatile reagent for constructing sulfur-containing heterocycles like thiophenes and benzothiophenes.
• Material Science: Precursor for self-assembled monolayers (SAMs) and surface coatings on metals like gold, leveraging the strong Au-S bond.
• Research & Development: A valuable tool compound in academic and industrial R&D for exploring new synthetic pathways and material properties.

Basic Information

Product Name	4-Mercaptocinnamic Acid
CAS No.	155378-75-9
Molecular Formula	C9H8O2S
Molecular Weight	180.22 g/mol
Synonyms	(E)-3-(4-Sulfanylphenyl)acrylic acid; 3-(4-Mercaptophenyl)-2-propenoic acid; 4-Thiolcinnamic acid; 4-Sulfanylcinnamic acid; p-Mercaptocinnamic acid; 4-MCA; 3-(4-Mercaptophenyl)acrylic acid; (2E)-3-(4-Sulfanylphenyl)prop-2-enoic acid
EINECS	Contact for details

Quality Control

Our 4-Mercaptocinnamic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting the specific results for your quality assurance and regulatory needs.

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 15-25°C. Due to its sensitivity to oxidation and light, prolonged exposure to air or light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm

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