Since the molecule was deemed toxic in moderate doses, chemists modified its structure and found a compound, N-acetyl-para-aminophenol, that was less harmful but still had pain reliever properties. In ...

The paracetamol molecule (N-acetoxy-p-aminophenol) ... However, given its complex and irregular molecular structure, lignin is challenging to break down into useful components.

The team derived acetaminophen, the active ingredient in Tylenol, from a plant wall polymer called lignin. Chelsea Mamott Acetaminophen—the active ingredient in many Americans’ go-to pain ...