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thumb|(S)-(+)-lactic acid (left) and (R)-(–)-lactic acid (right) are non-superposable mirror images of each other.
thumb|(S)-(+)-lactic acid (left) and (R)-(–)-lactic acid (right) are non-superposable mirror images of each other.
In chemistry, an enantiomer (/ɪˈnænti.əmər, ɛ-, -oʊ-/ ih-NAN-tee-ə-mər), also known as an optical isomer, antipode, or optical antipode, is one of a pair of molecular entities which are mirror images of each other and non-superposable.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).