Browse and filter a database of common chemical compounds by entering a Search Compound name or formula, selecting a Compound Type, and setting a Molecular Weight Range to find your matching Compounds Found — along with the Average Molecular Weight across your results.
Compounds Found
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Average Molecular Weight
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A molecular formula shows the exact number and types of atoms in a molecule. For example, H2O represents water with 2 hydrogen atoms and 1 oxygen atom.
Molecular weight is calculated by adding up the atomic weights of all atoms in a compound. It's expressed in grams per mole (g/mol).
Organic compounds contain carbon-hydrogen bonds and are typically derived from living organisms. Inorganic compounds usually don't contain carbon-hydrogen bonds.
Some compounds have been known for so long that their common names are more widely used than systematic names. Examples include water (H2O), ammonia (NH3), and methane (CH4).
You can search by the compound's common name, systematic name, or molecular formula. The search is case-insensitive and will match partial names.
Acids release hydrogen ions in solution, bases release hydroxide ions or accept hydrogen ions, and salts are ionic compounds formed from acid-base reactions.
No, molecular formulas show the exact number of atoms, while empirical formulas show the simplest ratio. Structural formulas show how atoms are connected.