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There are three common naming conventions for specifying one of the two enantiomers (the absolute configuration) of a given chiral molecule: the R/S system is based on the geometry of the molecule; the (+)- and (−)- system (also written using the obsolete equivalents d- and l-) is based on its optical rotation properties; and the D/L system is based on the molecule's relationship to ...
In chemistry, a racemic mixture or racemate (/ r eɪ ˈ s iː m eɪ t, r ə-, ˈ r æ s ɪ m eɪ t / [1]) is one that has equal amounts of left- and right-handed enantiomers of a chiral molecule or salt. Racemic mixtures are rare in nature, but many compounds are produced industrially as racemates.
R)-1-Aminoindane is a 1-aminoindane derivative. [1] It is specifically the (R)-enantiomer of 1-aminoindane, which is a racemic mixture of (R)- and (S)-enantiomers. [8] 1-Aminoindane is structurally related to 2-aminoindan. [1] A number of derivatives of 1- and 2-aminoindane are known. [1]
Ethambutol: Whereas the (S,S)-(+)-enantiomer is used to treat tuberculosis, the (R,R)-(–)-ethambutol may cause blindness. [20] Enantiomer of ethambutol used to treat tuberculosis Enantiomer of ethambutol that causes blindness. Steroid receptor sites also show stereoisomer specificity. Penicillin's activity is stereodependent.
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A configurational stereoisomer is a stereoisomer of a reference molecule that has the opposite configuration at a stereocenter (e.g., R- vs S-or E- vs Z-). This means that configurational isomers can be interconverted only by breaking covalent bonds to the stereocenter, for example, by inverting the configurations of some or all of the ...
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In today's puzzle, there are six theme words to find (including the spangram). Hint: The first one can be found in the top-half of the board. Here are the first two letters for each word: