Description

Propynoic Acid Propargyl Ester is a versatile and reactive organic ester, also known by its CAS number 4383-39-5. This compound serves as a critical building block in organic synthesis, valued for its propargyl and ester functional groups which enable a range of chemical transformations. It is primarily sought by R&D laboratories and chemical manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries for developing advanced intermediates and fine chemicals.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and complex drug molecules.
• Agrochemical Synthesis: Serves as a key precursor in the production of herbicides, fungicides, and plant growth regulators.
• Polymer & Resin Modification: Acts as a cross-linking agent or monomer in the formulation of specialty polymers, coatings, and adhesives.
• Organic Synthesis Building Block: Employed in click chemistry, Sonogashira couplings, and other catalytic reactions to introduce propargyl motifs.
• Fine Chemical Production: Utilized in the manufacture of flavors, fragrances, and other high-value specialty chemicals.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic pathways and material science.

Basic Information

Product Name	Propynoic Acid Propargyl Ester
CAS No.	4383-39-5
Molecular Formula	C6H6O2
Molecular Weight	110.11 g/mol
Synonyms	Propargyl Propiolate; 2-Propynoic Acid 2-Propynyl Ester; Propiolic Acid Propargyl Ester; Propargyl Propiolate Ester; 2-Propynyl Propiolate; Propynyl Propiolate; Propargyl 2-Propynoate
EINECS	224-504-9

Quality Control

Our Propynoic Acid Propargyl Ester is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (IR, NMR), to ensure high purity and consistency. Certificates of Analysis (COA) are provided with every shipment, detailing all relevant specifications. We adhere to cGMP principles where applicable to support our customers in regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area at temperatures between 2°C and 8°C (refrigerated) to mitigate its highly volatile and easily oxidized nature. For long-term storage, consider maintaining the product under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation. Keep away from heat, sparks, open flames, and incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC)	Total impurities ≤ 3.0%
Density (at 20°C)	~1.05 g/cm³
Refractive Index (n20/D)	~1.45

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