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  2. Enantiomer - Wikipedia

    en.wikipedia.org/wiki/Enantiomer

    An example of such an enantiomer is the sedative thalidomide, which was sold in a number of countries around the world from 1957 until 1961. It was withdrawn from the market when it was found to cause birth defects. One enantiomer caused the desirable sedative effects, while the other, unavoidably [23] present in equal quantities, caused birth ...

  3. Enantiopure drug - Wikipedia

    en.wikipedia.org/wiki/Enantiopure_drug

    In 1848, Louis Pasteur became the first scientist to discover chirality and enantiomers while he was working with tartaric acid. During the experiments, he noticed that there were two crystal structures produced but these structures looked to be non-superimposable mirror images of each other; this observation of isomers that were non-superimposable mirror images became known as enantiomers.

  4. Chirality - Wikipedia

    en.wikipedia.org/wiki/Chirality

    Macroscopic examples of chirality are found in the plant kingdom, the animal kingdom and all other groups of organisms. A simple example is the coiling direction of any climber plant, which can grow to form either a left- or right-handed helix. In anatomy, chirality is found in the imperfect mirror image symmetry of many kinds of animal bodies.

  5. Homochirality - Wikipedia

    en.wikipedia.org/wiki/Homochirality

    [24] [25] If the reaction is started with some of one of the product enantiomers already present, the product acts as an enantioselective catalyst for production of more of that same enantiomer. [26] The initial presence of just 0.2 equivalent one enantiomer can lead to up to 93% enantiomeric excess of the product.

  6. Chirality (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Chirality_(chemistry)

    Different enantiomers or diastereomers of a compound were formerly called optical isomers due to their different optical properties. [29] At one time, chirality was thought to be restricted to organic chemistry, but this misconception was overthrown by the resolution of a purely inorganic compound, a cobalt complex called hexol , by Alfred ...

  7. Words are overrated. Here’s why we’re addicted to ‘silent ...

    www.aol.com/words-overrated-why-addicted-silent...

    Get inspired by a weekly roundup on living well, made simple. Sign up for CNN’s Life, But Better newsletter for information and tools designed to improve your well-being.

  8. Stereoisomerism - Wikipedia

    en.wikipedia.org/wiki/Stereoisomerism

    These include meso compounds, cis–trans isomers, E-Z isomers, and non-enantiomeric optical isomers. Diastereomers seldom have the same physical properties. In the example shown below, the meso form of tartaric acid forms a diastereomeric pair with both levo- and dextro-tartaric acids, which form an enantiomeric pair.

  9. Is there already a College Football Playoff controversy ...

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    The decision from the selection committee related to the first-round bye is not insignificant. The fourth highest-ranked conference champion, the No. 4 seed in the bracket, gets an additional week ...