Math Kangaroo USA
International Competition in Mathematics
for K-12 students
Math Kangaroo USA
International Competition in Mathematics
for K-12 students
What a drug is used for (e.g., "Antihistamine").
In 2013, Merck & Co. transferred the rights to the Royal Society of Chemistry (RSC) .
Individual entries for chemicals and drugs. Molecular Formulas: Precise layouts of how atoms connect.
The 14th Edition is now considered a "collector's item" for many veteran scientists who prefer the tactile feel of a physical book over a digital screen. 🔬 Why It Matters Today
The Merck Index began in 1889. It was originally a small catalog for the Merck pharmacy in Germany. Over 120 years, it evolved into the world's most trusted chemical reference. By the time the 14th Edition arrived, it had become an essential tool for: identifying unknown substances. Pharmacists checking drug interactions. Environmentalists researching toxins. Students learning molecular structures. 🧪 What’s Inside the 14th Edition?
This specific edition was a physical powerhouse. It contained over 2,500 pages of dense, verified data. Key Features: