• The concepts of stereoisomerism, D and L - isomers, stereospecificity are very important, as in strictly living organisms strictly specific stereoisomers function: L-lactic acid, L-amino acids, L-phospholipids, but D-carbohydrates. (gohalfsies.com)
  • Stereoisomerism is therefore possible in those alkenes in which neither carbon atom bears two identical substituents. (britannica.com)
  • Stereoisomerism about double bonds arises because rotation about the double bond is restricted, keeping the substituents fixed relative to each other. (wikipedia.org)
  • The different molecules only differ from each other by their substituents, some of them only by a mere stereoisomerism such as GTX-2 and GTX-3. (wikipedia.org)
  • Treatment of animals or cells with the amphipathic tertiary amine U18666A {3beta-[2-(diethylamino) ethoxy]androst-5-en-17-one} provides models for several human diseases (e.g., cataracts, Niemann-Pick disease, and epilepsy). (biomedsearch.com)