Description

3-Bromo-2-Methyl-Crotonic Acid is a versatile halogenated carboxylic acid derivative, serving as a key synthetic intermediate in advanced organic chemistry. Its value lies in the reactive bromine and carboxylic acid functional groups, which enable precise chemical modifications for building complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for molecules requiring a halogenated, branched-chain carboxylic acid moiety.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, and plant growth regulators where its structure imparts specific biological activity.
• Organic Synthesis Reagent: Acts as a versatile electrophile or a precursor for generating other functional groups in complex multi-step synthesis for fine chemicals and materials science.
• Ligand and Catalyst Development: Employed in the preparation of specialized ligands and organometallic catalysts used in asymmetric synthesis and cross-coupling reactions.
• Chemical Research & Development: Serves as a standard or starting material in academic and industrial R&D labs for methodological studies and novel compound library generation.

Basic Information

Product Name	3-Bromo-2-Methyl-Crotonic Acid
CAS No.	35058-00-5
Molecular Formula	C5H7BrO2
Molecular Weight	179.01 g/mol
Synonyms	2-Methyl-3-bromocrotonic Acid; 3-Bromo-2-methylbut-2-enoic Acid; (E)-3-Bromo-2-methylbut-2-enoic Acid; 3-Bromo-2-methylcrotonate; β-Bromo-α-methylcrotonic Acid; 3-Bromo-2-methyl-2-butenoic Acid
EINECS	Contact for details

Quality Control

Our 3-Bromo-2-Methyl-Crotonic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment 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 room temperature (15-25°C). Keep away from strong bases, oxidizing agents, and sources of ignition. Due to its nature as a strong acid/organic solvent, handle with appropriate personal protective equipment in a fume hood.

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%
Residue on Ignition	≤ 0.1%

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