stereoisomer of alpha-tocopherol, bonds around the stereocenters are shown as dashed lines ( pointing down ) or wedges ( pointing up ) . ]]
42.
While it does provide access to every possible stereoisomer of any desired aldose, the process is limited in by its low yield and use of toxic reagents.
43.
The " R " stereoisomer is the one that binds to the GABA B receptor, whereas the " S " stereoisomer does not.
44.
The " R " stereoisomer is the one that binds to the GABA B receptor, whereas the " S " stereoisomer does not.
45.
ALOX15 and Alox15 enzymes act with a high degree of Stereospecificity to form products that position the hydroperoxy residue in the " S " stereoisomer configuration.
46.
If, by contrast they are in a trans configuration, then the stereoisomer is assigned an " E " or " Entgegen configuration ".
47.
The halogenated alkylamine antihistamines all exhibit optical isomerism and brompheniramine products contain racemic brompheniramine maleate whereas dexbrompheniramine ( Drixoral ) is the dextrorotary ( right-handed ) stereoisomer.
48.
The halogenated alkylamine antihistamines all exhibit optic isomerism and brompheniramine products contain racaemic brompheniramine maleate whereas dexbrompheniramine ( Drixoral ) is the dextrorotary ( right-handed ) stereoisomer.
49.
The 17 membered ring with n-chloroperbenzoic acid was hydrogenolysed over palladium-charcoal; subsequent acetylation with acetic anhydride-triethylamine yielded lythranidine in the stereoisomer shown.
50.
Although it is found in nature as a single stereoisomer, halostachine is more commonly available as a synthetic product in the form of its racemate ( see below ).
