when was acetaminophen created

Acetaminophen (also called paracetamol) was first synthesized in the late 19th century, in 1877–1878, by the American chemist Harmon Northrop Morse at Johns Hopkins University.

Here’s the quick scoop, in a friendly explainer style.

Quick Scoop: Key Dates

• Around 1877–1878: Harmon Northrop Morse synthesizes acetaminophen (paracetamol) from 4‑nitrophenol using tin and glacial acetic acid.

• 1880s: Doctors begin testing related coal‑tar derivatives (like acetanilide and phenacetin) as fever reducers and painkillers.

• 1887: Clinical pharmacologist Joseph von Mering tries paracetamol in humans, showing its usefulness as an analgesic and antipyretic.

• 1940s: Researchers realize that older drugs acetanilide and phenacetin are actually metabolized in the body into acetaminophen, which is the true active compound.

• 1955: Acetaminophen is finally mass‑marketed in the U.S. as Tylenol, and it starts its rise as a household pain and fever medicine.

So, if you’re asking “when was acetaminophen created?” for a simple factual answer, the key year usually cited is 1877–1878 , with 1878 often given as the classic date of its synthesis by Morse.

In modern discussions and news, acetaminophen still trends on and off, whether it’s debates about safety, liver toxicity, or its role in pregnancy, but the core origin story goes all the way back to that 19th‑century coal‑tar chemistry lab.

TL;DR: Acetaminophen was first made in 1877–1878 by Harmon Northrop Morse, but it only became widely used as Tylenol starting in the mid‑1950s.

Information gathered from public forums or data available on the internet and portrayed here.