Continue from today’s review, revisit weak skills, or open the topic you need now.
ImprovedComplete a problem to start your weekly summary.
Next focusNo review is due yet. Start any trainer and your next review will appear here.
Learning records are stored in this browser with IndexedDB.
Existing local progress was imported without creating artificial history entries.
Learn how chemistry works, not just the answer. Meimay helps you learn nomenclature, spectroscopy and reaction mechanisms step by step. Start without an account; core features are free.
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, ¹H/¹³C-NMR and MS spectra to deduce structures. Learn how characteristic bands and chemical shifts behave, sharpen reflexes in focused drills, then rebuild unknowns from fragments in full analysis mode.
Start →Draw the curly arrows yourself and build organic reaction mechanisms step by step: start an arrow at a bond or a lone pair and push electrons through SN1, SN2, E2, carbonyl additions and more.
Start →Meimay is an independently developed chemistry learning environment created by Shintaro Shimizu and Jumpei Toshimori to help learners understand the decisions behind nomenclature, spectroscopy and reaction mechanisms. Core features are free, and no account is required to begin. Learning progress is stored on your device in the current version.
Problems and explanations are created independently for learning and are reviewed progressively. Some representations are simplified for educational use. Access analytics may be used to improve the service; data handling and limitations are explained in each app's Privacy Policy and Disclaimer.