1. Acts Phenylpropiolic acid as a core alkynyl aromatic acid intermediate, efficiently synthesizing functionalized alkynyl derivatives for high-performance pharmaceutical and agrochemical intermediate manufacturing.

2. Serves Phenylpropiolic acid CAS 637-44-5 as a key building block, stably enabling cycloaddition reactions to prepare heterocyclic compounds for fine chemical and optoelectronic material production.

3. Functions as a fine chemical raw material, reliably fabricating specialty polymers with excellent thermal stability for advanced industrial coating applications.

Store Phenylpropiolic acid CAS 637-44-5 in sealed HDPE/amber glass drums at 5–25℃ in a cool, dry, well-ventilated area, away from open fire, strong oxidants, strong bases and reducing agents. Wear nitrile gloves, safety goggles and dust mask; avoid dust inhalation, skin/eye contact and ingestion, which may cause mild corrosive irritation to mucous membranes. Reseal tightly after use; neutralize waste with dilute alkali before disposal, strictly prohibit direct water discharge and mixing with combustibles.

Phenylpropiolic acid CAS 637-44-5 is a low-toxic alkynyl aromatic acid (oral LD50>2000mg/kg), only mild corrosive irritation on direct contact; no spontaneous reaction risk under normal storage.

In regulated use, Phenylpropiolic acid CAS 637-44-5 features high reactivity of triple bond/carboxyl group for diverse organic synthesis, good solubility in ethanol/acetone/ethyl acetate, excellent thermal stability during processing, and the phenylalkynyl structure enhances molecular rigidity, ensuring high reaction yield and product purity for fine chemical synthesis.