Description

Butanoic Acid, 3-Hydroxy-4-(Triphenylmethoxy)-, Methyl Ester, (S) is a high-purity, chiral synthetic intermediate of significant importance in advanced organic synthesis. This compound matters for its role as a key building block in the production of complex, biologically active molecules, offering precise stereochemical control. It is primarily needed by research institutions and pharmaceutical manufacturers engaged in the development of new active pharmaceutical ingredients (APIs) and fine chemicals.

Application

• Pharmaceutical Intermediate: A critical chiral synthon in the multi-step synthesis of novel drug candidates and complex APIs.
• Asymmetric Synthesis: Used in stereoselective reactions to construct molecules with defined three-dimensional architecture.
• Fine Chemical Production: Serves as a specialized building block for high-value agrochemicals, flavors, and fragrances.
• Academic & Industrial Research: A valuable reagent for methodological development in organic chemistry and catalysis studies.
• Process Chemistry: Employed in route scouting and scale-up activities for optimizing synthetic pathways.

Basic Information

Product Name	Butanoic Acid, 3-Hydroxy-4-(Triphenylmethoxy)-, Methyl Ester, (S)
CAS No.	113240-53-2
Molecular Formula	C24H24O4
Molecular Weight	376.45 g/mol
Synonyms	(S)-Methyl 3-Hydroxy-4-(triphenylmethoxy)butanoate; (S)-Methyl 4-(Trityloxy)-3-hydroxybutyrate; (S)-MTOB; (S)-3-Hydroxy-4-(trityloxy)butyric Acid Methyl Ester; (S)-Methyl 3-Hydroxy-4-trityloxybutanoate; (S)-4-(Triphenylmethoxy)-3-hydroxybutyric Acid Methyl Ester; (S)-Trityl-protected 3-hydroxybutyrate methyl ester
EINECS	Contact for details

Quality Control

Our Butanoic Acid, 3-Hydroxy-4-(Triphenylmethoxy)-, Methyl Ester, (S) is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including chiral purity verification, to ensure it meets the high standards required for pharmaceutical R&D and production. Certificates of Analysis (COA) with detailed chromatographic data (HPLC/GC) are provided to guarantee consistent quality, identity, and purity.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 15-25°C). This compound is moisture-sensitive; keep the container tightly sealed under an inert atmosphere if specified.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (Chiral HPLC)	≥ 99.0% ee
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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