{"id":10668,"date":"2026-03-10T23:38:09","date_gmt":"2026-03-10T23:38:09","guid":{"rendered":"https:\/\/longchangextracts.com\/acetanilide-cas-103-84-4-complete-guide-to-this-historical-pharmaceutical-intermediate-2\/"},"modified":"2026-03-10T23:38:09","modified_gmt":"2026-03-10T23:38:09","slug":"acetanilide-cas-103-84-4-complete-guide-to-this-historical-pharmaceutical-intermediate-2","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/tr\/acetanilide-cas-103-84-4-complete-guide-to-this-historical-pharmaceutical-intermediate-2\/","title":{"rendered":"Acetanilide (CAS 103-84-4): Complete Guide to This Historical Pharmaceutical Intermediate"},"content":{"rendered":"

Acetanilide is a synthetic organic compound with the molecular formula C8H9NO and CAS number 103-84-4. While it was once used as a medication, today it serves primarily as an important intermediate in pharmaceutical synthesis, dye manufacturing, and rubber processing.<\/p>\n

What is Acetanilide?<\/h2>\n

Acetanilide is an organic compound derived from aniline and acetic acid. It appears as colorless to white crystals or powder with a characteristic odor. Originally introduced in medical therapy in 1886 under the commercial name “Antifebrin,” it was one of the earliest synthetic pharmaceutical compounds used to treat fever and pain.<\/p>\n

The discovery of acetanilide’s therapeutic properties was somewhat accidental. In late 19th century Germany, it was mistakenly used as an anti-helminthic agent, and researchers discovered that it effectively reduced fever. This serendipitous finding led to its widespread use as an antipyretic (fever reducer) and analgesic (pain reliever) for many years.<\/p>\n

Historical Significance: The Precursor to Paracetamol<\/h2>\n

One of the most fascinating aspects of acetanilide is its role in the discovery of paracetamol (acetaminophen). After several decades of use, researchers at Yale University determined in 1948 that acetanilide is metabolized in the human body to paracetamol, and that it is this metabolite\u2014not acetanilide itself\u2014that is responsible for the analgesic and antipyretic effects.<\/p>\n

This discovery led to the development of paracetamol as a safer alternative, which eventually became one of the most widely used medications worldwide. Acetanilide’s historical importance in medicine cannot be overstated, as it paved the way for one of modern medicine’s most essential drugs.<\/p>\n

What Are the Benefits and Applications?<\/h2>\n

Pharmaceutical Intermediate<\/h3>\n

Today, acetanilide’s primary value lies in its use as a key intermediate in pharmaceutical manufacturing:<\/p>\n