the.com/stereoisomer
Same atoms, same bonds, different handshake — molecules that are identical twins with opposite personalities.
means A molecule that has the exact same atoms connected in the exact same order as another, but arranged differently in 3D space, giving the two versions different properties.
from Built from Greek pieces: 'stereo-' (στερεός, solid, three-dimensional — the same root that gives us stereo sound and stereoscope) plus 'isomer,' itself from 'isos' (equal) and 'meros' (part/share). Chemists coined 'isomer' in the 1800s for compounds sharing a formula but not a structure; 'stereoisomer' sharpened that idea once scientists realized molecules could differ not just in which atoms bond to which, but in how those bonds point through space — the solid, spatial twist that 'stereo-' insists on.
- thalidomide lesson
- one mirror form healed, the other caused birth defects
- smell test
- carvone isomers smell like spearmint versus caraway
- chirality
- non-superimposable on their own mirror image, like hands
- life's bias
- nature almost always builds proteins from one isomer only