Definition: Azoles with an OXYGEN and a NITROGEN next to each other at the 1,2 positions, in contrast to OXAZOLES that have nitrogens at the 1,3 positions.
acivicin [ AT 125,AT-125,L-(alphaS,5S)-alpha-amino-3-chloro-4,5-dihydro-5-isoxazoleacetic acid,NSC 163501,U 42,126,U-42,126,alpha-S,5S-alpha-amino-3-chloro-2-isoxazoline-5-acetic acid,alpha-amino-3-chloro-4,5-dihydro-5-isoxazoleacetic acid ] RN given refers to cpd without isomeric desgination
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