Description

4-((((2-Carboxyethyl)Thio)Carbonothioyl)Thio)-4-Cyanopentanoic Acid is a specialized functionalized chain transfer agent (CTA) and RAFT (Reversible Addition-Fragmentation Chain Transfer) agent. This compound is engineered to provide exceptional control over polymer molecular weight and architecture, enabling the synthesis of advanced materials with precise properties. It is primarily utilized by researchers and industrial chemists in the polymer and materials science sectors for developing high-performance, tailor-made polymers, including functional acrylics, block copolymers, and surface-modified nanoparticles.

Application

• RAFT Polymerization: As a key chain transfer agent for the controlled radical polymerization of (meth)acrylates, acrylamides, and styrenics.
• Functional Polymer Synthesis: Enables the production of polymers with pre-defined carboxylic acid and cyano end-groups for further chemical modification.
• Block Copolymer Manufacture: Essential for creating well-defined diblock and multiblock copolymers with narrow molecular weight distributions.
• Surface-Initiated Polymerization: Used to graft polymer brushes from nanoparticles, silicon wafers, or other substrates for advanced coatings.
• Bioconjugation & Drug Delivery Systems: Facilitates the synthesis of polymer-drug conjugates and functional carriers due to its reactive end-groups.
• Advanced Material Research: Serves as a critical reagent in R&D for stimuli-responsive polymers, hydrogels, and self-assembling nanostructures.

Basic Information

Product Name	4-((((2-Carboxyethyl)Thio)Carbonothioyl)Thio)-4-Cyanopentanoic Acid
CAS No.	2055041-03-5
Molecular Formula	C10H13NO4S3
Molecular Weight	307.40 g/mol
Synonyms	2-(Ethylthiocarbonothioylthio)propanoic acid derivative; 4-Cyano-4-[(dodecylsulfanylthiocarbonyl)sulfanyl]pentanoic acid (related); RAFT Agent (Carboxy-functionalized); 4-Cyano-4-[(2-carboxyethyl)sulfanylthiocarbonyl]sulfanylpentanoic Acid; CEPA (common abbreviation); Carboxyethyl-based RAFT CTA; Trithiocarbonate RAFT agent; Functional Trithiocarbonate
EINECS	Contact for details

Quality Control

Our 4-((((2-Carboxyethyl)Thio)Carbonothioyl)Thio)-4-Cyanopentanoic Acid is manufactured under strict quality protocols to ensure batch-to-batch consistency and high purity, critical for reproducible polymerization results. Each lot is supported by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We adhere to cGMP standards where applicable, and our quality system is designed to meet the stringent requirements of research and industrial-scale polymer synthesis.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C (refrigerated) or as specified on the label. This material is hygroscopic (moisture-sensitive) and easily oxidized; for long-term storage, consider sealing under an inert atmosphere such as nitrogen or argon. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Melting Point	Contact for details
Solubility	Soluble in common organic solvents (DMF, THF, Acetone)

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