Caffeine - C8-H10-N4-O2

Caffeine, nature’s ultimate energy booster, is the molecule behind countless productive mornings and late-night bursts of creativity. With its elegant structure of fused aromatic rings and nitrogen atoms, it’s as much a chemical marvel as it is a daily necessity for billions. Celebrated as the world’s most popular legal stimulant, caffeine works its magic by blocking adenosine, sharpening focus, and keeping fatigue at bay.