Description

2-Methylbutyl (E)-(-)-2-Methylisocrotonate is a chiral, unsaturated ester with a distinctive fruity, green aroma profile. This compound is valued for its high stereochemical purity and stability, making it a critical chiral building block and flavor/fragrance intermediate. It is primarily sought by manufacturers in the flavor & fragrance, pharmaceutical, and fine chemical synthesis industries for creating high-value, optically active products.

Application

• Flavor & Fragrance (F&F) Industry: Used as a key chiral intermediate in the synthesis of complex, natural-identical flavor compounds and high-impact fragrance ingredients.
• Pharmaceutical Intermediates: Serves as a versatile chiral synthon for the production of active pharmaceutical ingredients (APIs) requiring specific stereochemistry.
• Agrochemical Synthesis: Employed in the research and development of chiral pesticides and herbicides, where the specific isomer can influence biological activity.
• Fine Chemical Manufacturing: Acts as a precursor for specialty chemicals, including liquid crystals, advanced polymers, and other performance materials.
• Research & Development: Utilized in academic and industrial R&D laboratories for methodological studies in asymmetric synthesis and catalysis.

Basic Information

Product Name	2-Methylbutyl (E)-(-)-2-Methylisocrotonate
CAS No.	97752-27-7
Molecular Formula	C10H18O2
Molecular Weight	170.25 g/mol
Synonyms	(E)-2-Methylbutyl 2-methylbut-2-enoate; (E)-(-)-2-Methylisocrotonic Acid 2-Methylbutyl Ester; (E)-2-Methyl-2-butenoic Acid 2-Methylbutyl Ester; Tiglic Acid 2-Methylbutyl Ester (E-isomer); (E)-2-Methylbutyl tiglate; 2-Methylbutyl (E)-2-methylcrotonate; (E)-2-Methylbutyl 2-methylcrotonate; Angelic Acid 2-Methylbutyl Ester (E-isomer)
EINECS	Contact for details

Quality Control

Our 2-Methylbutyl (E)-(-)-2-Methylisocrotonate is produced under strict quality management systems. Each batch is analyzed to ensure high chemical and optical purity, with critical parameters including assay, enantiomeric excess (e.e.), and identity verified. Certificates of Analysis (COA) with detailed chromatographic data (GC/HPLC) are provided for every shipment to guarantee supply consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong bases and incompatible materials such as strong oxidizing agents. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0% e.e.
Specific Rotation [α]D20	Contact for details
Refractive Index nD20	Contact for details
Density (g/mL, 20°C)	Contact for details

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