Organic Chemistry Simulator

Build organic molecules atom by atom and see the IUPAC name, molecular formula, and physicochemical properties update in real time. Free, no download required.

How it works

Click an atom (carbon, nitrogen, oxygen, sulfur...), place it on the canvas, then connect atoms with single, double, or triple bonds. The simulator recalculates implicit hydrogens automatically and names the resulting structure following IUPAC nomenclature rules — covering hydrocarbons, alcohols, aldehydes, ketones, carboxylic acids, esters, ethers, amines, amides, nitriles, thiols, and more.

What you get

IUPAC systematic name, broken down into main chain / infix / suffix
Molecular formula and molar mass
Polarity and hydrogen-bonding assessment
Ready-made example molecules to start from

Open the simulator →

Note: the simulator interface currently defaults to Portuguese on first load; a language switcher inside the app lets you change it (🇺🇸 EN available).