Description

(-)-4,4'-Azobis[(S)-4-Cyanopentanoic Acid] is a chiral, optically active azo initiator of high purity. This compound is valued for its ability to initiate stereospecific polymerizations, enabling the production of polymers with controlled tacticity and advanced material properties. It is essential for researchers and manufacturers in the fields of advanced polymer chemistry, specialty materials, and pharmaceuticals who require precise control over polymerization mechanisms and final polymer architecture.

Application

• Stereospecific Polymerization: As a chiral radical initiator for the synthesis of optically active polymers and stereoregular polymers like isotactic or syndiotactic polystyrene.
• Advanced Material Synthesis: In the development of specialty polymers with controlled molecular weight and tacticity for high-performance plastics and resins.
• Pharmaceutical Intermediates: Used in research for creating chiral building blocks and polymeric drug delivery systems requiring specific stereochemistry.
• Surface-Initiated Polymerization: For grafting polymers onto surfaces with controlled stereochemistry, useful in coatings and sensor technologies.
• Block Copolymer Production: Initiating the polymerization of specific blocks in block copolymers where stereoregularity is a critical parameter.
• Academic & Industrial R&D: A critical reagent for investigating new polymerization mechanisms and the properties of stereoregular polymers.

Basic Information

Product Name	(-)-4,4'-Azobis[(S)-4-Cyanopentanoic Acid]
CAS No.	23886-45-5
Molecular Formula	C14H16N4O4
Molecular Weight	304.30 g/mol
Synonyms	(S,S)-Azobis(4-cyanopentanoic acid); (S)-4,4'-Azobis(4-cyanovaleric acid); (-)-4,4'-Azobis(4-cyano-S-valeric acid); (S,S)-2,2'-Azobis(4-cyano-2-methylbutyric acid); Chiral AIBN derivative; Optically active azo initiator; (S,S)-ACPA; V-501 enantiomer
EINECS	Contact for details

Quality Control

Our (-)-4,4'-Azobis[(S)-4-Cyanopentanoic Acid] is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high chiral purity and chemical integrity, meeting the exacting standards required for advanced synthetic applications. Certificates of Analysis (COA) with detailed chromatographic and spectroscopic data are provided to guarantee batch-to-batch consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept sealed under dry, inert conditions and opened only in a controlled environment to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% ee
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm

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