Description

(S)-1,2-Butanediol is a high-purity chiral building block and solvent of significant industrial importance. This enantiomerically pure compound is valued for its role in asymmetric synthesis and as a specialty intermediate in advanced manufacturing. It is essential for industries requiring precise stereochemistry, including pharmaceuticals, agrochemicals, and fine chemicals. The product is supplied under strict quality control to ensure batch-to-batch consistency for critical applications.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs), particularly in stereoselective reactions.
• Agrochemical Synthesis: Used in the production of enantiomerically pure herbicides, fungicides, and plant growth regulators.
• Fine Chemical Production: Serves as a building block for fragrances, flavors, and other high-value specialty chemicals where optical purity is critical.
• Polymer Modifier: Employed in the synthesis of chiral polymers and resins with specific optical or mechanical properties.
• Asymmetric Catalyst Ligand Precursor: Utilized in the development of chiral ligands for catalytic processes.
• Research & Development: A valuable reagent in academic and industrial R&D for method development and novel synthetic routes.

Basic Information

Product Name	(S)-1,2-Butanediol
CAS No.	73522-17-5
Molecular Formula	C4H10O2
Molecular Weight	90.12 g/mol
Synonyms	(S)-1,2-Butylene Glycol; (S)-1,2-Dihydroxybutane; (S)-Butane-1,2-diol; (S)-(-)-1,2-Butanediol; L-1,2-Butanediol; (2S)-Butane-1,2-diol
EINECS	Contact for details

Quality Control

Our (S)-1,2-Butanediol is manufactured under a strict quality management system. Every batch is analyzed to confirm identity, purity, and enantiomeric excess (e.e.) using advanced analytical techniques including chiral HPLC, GC, and NMR. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment. We support compliance with cGMP and ISO standards for pharmaceutical and industrial applications.

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). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect quality.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0%
Water Content (KF)	≤ 0.5%
Specific Rotation	Contact for details
Refractive Index	Contact for details

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