OrganicChem
Quiz
A Duolingo-style learning app for organic chemistry. Master reaction mechanisms, named reactions, and core concepts — through adaptive quizzes, circuits, and daily challenges.
Built for real learning
Not just flashcards — an adaptive system that builds understanding from the ground up.
11 chemistry categories
Chemistry textbooks
Written by a practising chemist — for students who want to understand, not just memorise.
A comprehensive guide to reaction mechanisms for undergraduate and graduate students, emphasising conceptual understanding over rote memorisation. Covers core transformations, stereochemical reasoning, and synthetic strategy.
An accessible introduction to drug design principles, pharmacophores, and structure–activity relationships. Aimed at advanced undergraduates entering the pharmaceutical sciences.
Expertise & publications
Postdoctoral researcher at the University of Copenhagen working on iridium-based photocatalytic probes and chemical biology tools.
Marcos San Segundo Eizaguirre
Synthetic organic chemist, author, and app developer.
Chemist, educator & builder
I'm a synthetic organic chemist from the Basque Country working as a postdoc at the University of Copenhagen, where I develop iridium-based photocatalytic probes and fluorophore conjugates for chemical biology applications.
Beyond the lab, I write chemistry textbooks and build mobile learning apps — because the best way to make science stick is to meet students where they are.
My work sits at the intersection of precision synthesis, light-driven chemistry, and modern pedagogy. Long-term goal: return to the Basque Country and keep building tools that make chemistry more accessible worldwide.