Description

(S)-5-(Diphenylamino)-5-Oxopent-3-Yn-2-Yl 4-Methylbenzenesulfonate is a high-purity, chiral organic intermediate featuring a unique molecular scaffold combining a diphenylamino group, a sulfonate ester, and an alkyne moiety. This compound is valued for its role as a versatile building block in advanced organic synthesis, particularly for constructing complex molecules with specific stereochemistry. It is primarily utilized by research institutions and pharmaceutical development companies engaged in the creation of novel active pharmaceutical ingredients (APIs), agrochemicals, and specialty materials.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and development of new drug candidates, especially for targeted therapies.
• Agrochemical Synthesis: Used in the preparation of advanced, stereospecific pesticides and herbicides.
• Ligand and Catalyst Development: Serves as a precursor for creating novel chiral ligands and organocatalysts for asymmetric synthesis.
• Material Science Research: Employed in the synthesis of functional organic molecules for electronic or optical materials.
• Academic & Industrial R&D: A valuable tool for chemists exploring new reaction methodologies and complex molecular architectures.

Basic Information

Product Name	(S)-5-(Diphenylamino)-5-Oxopent-3-Yn-2-Yl 4-Methylbenzenesulfonate
CAS No.	899809-78-0
Molecular Formula	C26H23NO4S
Molecular Weight	445.53 g/mol
Synonyms	(S)-5-(Diphenylamino)-5-oxopent-3-yn-2-yl tosylate; (S)-Tosyloxybut-2-ynyl diphenylcarbamate derivative; 4-Methylbenzenesulfonic acid (S)-5-(diphenylamino)-5-oxopent-3-yn-2-yl ester; (S)-N,N-Diphenyl-5-((tosyloxy)methyl)-5-oxopent-3-ynamide; (S)-2-(Diphenylcarbamoyl)-4-(p-toluenesulfonyloxy)but-2-yn-1-ol ester; (S)-5-Oxo-5-(diphenylamino)pent-3-yn-2-yl p-toluenesulfonate
EINECS	Contact for details

Quality Control

Our (S)-5-(Diphenylamino)-5-Oxopent-3-Yn-2-Yl 4-Methylbenzenesulfonate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification by HPLC, to ensure high chemical and enantiomeric purity suitable for demanding synthetic applications. Certificates of Analysis (COA) with detailed specifications are provided to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 97.0%
Chiral Purity (Chiral HPLC)	≥ 98.0% ee
Water Content (KF)	≤ 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.