Description

2-Chloro-3-Methylbut-2-Enoic Acid is a versatile chlorinated unsaturated carboxylic acid that serves as a key synthetic intermediate. Its reactive α,β-unsaturated acid chloride precursor structure makes it valuable for introducing functionalized alkyl chains into target molecules. This compound is primarily sought by research and development chemists and process engineers in the pharmaceutical and agrochemical sectors for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring halogenated side chains or as a precursor for more complex heterocycles.
• Agrochemical Synthesis: Serves as a building block for herbicides, fungicides, and plant growth regulators, leveraging its reactive site for coupling reactions.
• Organic Synthesis Reagent: Acts as a versatile electrophile in Michael additions or as a starting material for preparing esters, amides, and other derivatives in fine chemical production.
• Polymer Chemistry: Can be incorporated as a functional monomer to impart specific properties like adhesion or reactivity into specialty polymer chains.
• Chemical Research: Employed in academic and industrial R&D for method development and exploring new reaction pathways involving α-haloacrylic acids.

Basic Information

Product Name	2-Chloro-3-Methylbut-2-Enoic Acid
CAS No.	15052-93-4
Molecular Formula	C5H7ClO2
Molecular Weight	134.56 g/mol
Synonyms	2-Chloro-3-methylcrotonic acid; 2-Chloro-3-methyl-2-butenoic acid; 3-Methyl-2-chlorobut-2-enoic acid; NSC 403697; 2-Butenoic acid, 2-chloro-3-methyl-; α-Chloro-β-methylcrotonic acid
EINECS	Contact for details

Quality Control

Our 2-Chloro-3-Methylbut-2-Enoic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing including assay, purity profiling, and identification to ensure it meets stringent specifications for research and industrial use. Certificates of Analysis (COA) with detailed chromatographic data (HPLC/GC) are provided to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its nature as a strong acid/organic solvent, keep away from heat, sparks, open flames, and 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)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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