Description

2-Butenoic Acid, 2-Cyano-3-Hydroxy-, Methyl Ester (9Ci) is a specialized cyanoacrylate derivative with a reactive α,β-unsaturated ester backbone. This compound matters as a versatile chemical intermediate, offering a unique combination of an electron-withdrawing cyano group and a polymerizable alkene, which is critical for synthesizing advanced materials and fine chemicals. It is primarily needed by R&D chemists and process engineers in the pharmaceutical, agrochemical, and polymer industries for applications ranging from drug discovery to the development of specialty adhesives and coatings.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring cyanoacrylate or acrylic acid motifs.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators where its reactive sites enable structural diversification.
• Polymer & Resin Modifier: Acts as a functional monomer or cross-linking agent in specialty acrylic polymers, UV-curable resins, and high-performance adhesives to enhance properties like adhesion and chemical resistance.
• Fine Chemical Production: Employed in organic synthesis for Michael addition reactions and cyclization processes to create complex heterocyclic compounds.
• Research & Development: A valuable reagent in academic and industrial R&D labs for exploring new synthetic pathways and material science applications.
• Dye & Pigment Intermediate: Utilized in the synthesis of specialized dyes and organic pigments due to its ability to form conjugated systems.

Basic Information

Product Name	2-Butenoic Acid, 2-Cyano-3-Hydroxy-, Methyl Ester (9Ci)
CAS No.	149590-39-6
Molecular Formula	C7H7NO3
Molecular Weight	153.14 g/mol
Synonyms	Methyl 2-Cyano-3-hydroxy-2-butenoate; Methyl 2-Cyano-3-hydroxycrotonate; 2-Cyano-3-hydroxy-2-butenoic Acid Methyl Ester; 3-Hydroxy-2-cyano-2-butenoic Acid Methyl Ester; 2-Butenoic acid, 2-cyano-3-hydroxy-, methyl ester; Cyanoacetic acid, (1-methoxycarbonyl-1-propen-2-yl)-; (Z)-Methyl 2-cyano-3-hydroxybut-2-enoate (possible isomer)
EINECS	Contact for details

Quality Control

Our 2-Butenoic Acid, 2-Cyano-3-Hydroxy-, Methyl Ester (9Ci) is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for research and industrial use. Certificates of Analysis (COA) documenting all critical quality attributes are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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