Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or …

GHS, the Globally Harmonized System of Classification and Labeling of Chemicals, was developed by the United Nations as a way to bring into agreement the chemical regulations and standards of …

Acetaminophen (paracetamol), also commonly known as Tylenol, is the most commonly taken analgesic worldwide and is recommended as first-line therapy in pain conditions by the World Health …

Explore how atomic mass changes with atomic number in the periodic table of elements via interactive plots.

An alkaloid ester extracted from the leaves of plants including coca. It is a local anesthetic and vasoconstrictor and is clinically used for that purpose, particularly in the eye, ear, nose, and throat. It …

Explore how ionization energy changes with atomic number in the periodic table of elements via interactive plots.

Explore how density changes with atomic number in the periodic table of elements via interactive plots.

Explore how atomic radius changes with atomic number in the periodic table of elements via interactive plots.

PERIODIC TABLE OF ELEMENTS

Caffeine is a trimethylxanthine in which the three methyl groups are located at positions 1, 3, and 7. A purine alkaloid that occurs naturally in tea and coffee. It has a role as a central nervous system …