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Dec 17, 2016 at 14:54 comment added ron @K-Feldspar No, R and S are nomenclature terms that describe the spatial configuration at a chiral carbon using the Cahn-Ingold-Prelog priority system. (+) and (-) describe the direction of rotation of polarized light when it passes through the sample. There is no relationship between R and S and (+) and (-).
Dec 17, 2016 at 3:45 comment added K-Feldspar @ron could you please comment why chemistry.mcmaster.ca/~chem2ob3/nhw_temp/old_old_labmanual/… page shows (R)-(-)-Carvone? Wouldn't R (to the right) match with a (+) ?
Jun 2, 2014 at 2:38 comment added LDC3 You should also mention that dextrorotary is designated as D (D-Glucose) and levorotary as L (L-tyrosine). But there are some exceptions. L-alanine and a few more L-amino acids are dextrorotary and some D-sugars are levorotary.
Jun 2, 2014 at 2:27 history edited ron CC BY-SA 3.0
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Jun 1, 2014 at 19:32 history answered ron CC BY-SA 3.0