A set of free, browser-only chemistry practice tools. No install, no sign-up; your progress is saved on your own device. Pick whichever you want to start with.
Practise naming organic compounds with IUPAC nomenclature: flashcards, type-in and step-by-step quizzes, a draw-the-structure reverse mode, and R/S assignment. Both current and pre-1993 locant styles are accepted.
Start →Read IR, NMR and MS spectra to deduce structures. This one is on the way — check back soon.
Coming soonFollow the curly arrows and build the intermediate at each step. This one is on the way — check back soon.
Coming soon