Description

4-[4-(Methanesulfonyloxy)-1-Butynyl]-α,α-Di(Methyl)Benzeneacetic Acid, Methyl Ester is a high-purity synthetic organic intermediate characterized by its specific molecular architecture. This compound is critical for advanced pharmaceutical research and development, particularly in the synthesis of complex active pharmaceutical ingredients (APIs). It is primarily sought after by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries for constructing novel molecular frameworks.

Application

• Pharmaceutical Intermediate: A key building block in the multi-step synthesis of proprietary drug candidates and novel therapeutic agents.
• Agrochemical Research: Used in the development of new pesticides and herbicides, leveraging its functional groups for structural diversity.
• Fine Chemical Synthesis: Serves as a versatile precursor for creating specialized compounds used in material science and catalysis.
• Academic & Institutional R&D: Employed in university and research institute laboratories for methodological studies and exploring new chemical reactions.
• Process Chemistry Development: Utilized for scaling up synthetic routes from laboratory to pilot plant and commercial production.

Basic Information

Product Name	4-[4-(Methanesulfonyloxy)-1-Butynyl]-α,α-Di(Methyl)Benzeneacetic Acid, Methyl Ester
CAS No.	154825-94-2
Molecular Formula	C₁₇H₂₀O₅S
Molecular Weight	336.40 g/mol
Synonyms	Methyl 4-[4-(methylsulfonyloxy)-1-butyn-1-yl]-α,α-dimethylbenzeneacetate; Methyl 2-(4-((4-(methylsulfonyloxy)but-1-yn-1-yl)phenyl)-2-methylpropanoate; 154825-94-2; α,α-Dimethyl-4-[4-(methylsulfonyloxy)-1-butynyl]benzeneacetic acid methyl ester; 4-(4-Methanesulfonyloxybut-1-ynyl)-α,α-dimethylbenzeneacetic acid methyl ester
EINECS	Contact for details

Quality Control

Every batch of 4-[4-(Methanesulfonyloxy)-1-Butynyl]-α,α-Di(Methyl)Benzeneacetic Acid, Methyl Ester is manufactured under strict quality management systems. Our products undergo rigorous analytical testing, including HPLC, GC, and NMR, to ensure compliance with exacting purity standards for research and development use. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment.

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 product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) in its original packaging to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 97.0%
Purity (HPLC, Area %)	≥ 98.0%
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.