Description

Butanoic Acid, 2-Hydroxy-, Butyl Ester, (2R)- is a chiral ester derivative of 2-hydroxybutanoic acid, offering a defined stereochemistry critical for advanced synthesis and fine chemical manufacturing. This high-purity, optically active compound serves as a valuable building block and chiral auxiliary in applications where molecular handedness dictates performance. It is essential for research and production in the pharmaceutical, agrochemical, and specialty fragrance industries, where precise stereochemical control is a key quality parameter.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs) requiring specific (R)-configuration.
• Agrochemical Synthesis: Used in the production of enantiomerically pure herbicides, fungicides, and plant growth regulators.
• Flavor and Fragrance Ingredient: Acts as a precursor for high-value chiral esters and lactones used in premium fragrance and flavor compositions.
• Asymmetric Catalysis: Employed as a chiral ligand or auxiliary in catalytic processes to induce stereoselectivity.
• Polymer Modification: Serves as a functional monomer for introducing chiral centers into specialty polymers and coatings.
• Chemical Research: A standard reagent in academic and industrial R&D for studying stereospecific reactions and developing new synthetic methodologies.

Basic Information

Product Name	Butanoic Acid, 2-Hydroxy-, Butyl Ester, (2R)-
CAS No.	928835-95-4
Molecular Formula	C8H16O3
Molecular Weight	160.21 g/mol
Synonyms	(R)-2-Hydroxybutyric Acid Butyl Ester; (R)-Butyl 2-Hydroxybutanoate; (2R)-Butyl 2-Hydroxybutyrate; (R)-α-Hydroxybutyric Acid Butyl Ester; Butyl (R)-2-Hydroxybutyrate; (R)-HBBE; (R)-O-Butyl 2-Hydroxybutanoate; (R)-2-Hydroxybutanoic Acid Butyl Ester
EINECS	Contact for details

Quality Control

Our Butanoic Acid, 2-Hydroxy-, Butyl Ester, (2R)- is manufactured under strict quality management systems to ensure batch-to-batch consistency and high optical purity. Each lot is characterized by advanced analytical techniques including chiral HPLC, GC, and NMR to confirm identity, enantiomeric excess (ee), and purity. Certificates of Analysis (COA) detailing all specifications are provided with every shipment, supporting compliance in GMP and ISO 9001 environments.

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 oxidizing agents, strong acids, and strong bases. 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% ee
Specific Rotation	Contact for details
Refractive Index	Contact for details
Density	Contact for details
Water Content (KF)	≤ 0.5%

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