Acetylsalicylic Acid (Aspirin) CAS 50-78-2 Purity >99.5% (HPLC) Factory

Acetylsalicylic Acid (Aspirin) (CAS: 50-78-2) is an analgesic-antipyretic medicine made by salicylic acid interacting with acetic anhydride. Acetylsalicylic Acid is the most widely used medication in the world. It is a white crystal or crystalline powder, odorless or slightly acetic acid odor, slightly soluble in water, easily soluble in ethanol, and the aqueous solution is acidic. It is stable in dry air. It will be slowly hydrolyzed to be salicylic acid and acetic acid in moist air, and aqueous solution has acidic reaction. Acetylsalicylic Acid is an antipyretic ant rheumatic that is used to allay fever, headache,arthralgia, acticerheumatism,and rheumatoid arthritis.Toothache and dysmenorrhea and as raw material for making anti-carcinogen. In recent years, it has been found that aspirin has an inhibitory effect on platelet aggregation and can prevent thrombosis. Clinically used to prevent transient ischemic attack, myocardial infarction, artificial heart valve and venous fistula or other postoperative thrombosis. Listed in National Essential Medicine List. Acetylsalicylic acid also works as an intermediate of other medicines. The synthesis of aspirin is classified as an esterification reaction. Salicylic Acid is treated with acetic anhydride, an acid derivative, causing a chemical reaction that turns salicylic acid's hydroxyl group into an ester group (R-OH→R-OCOCH3). This process yields aspirin and acetic acid, which is considered a byproduct of this reaction.