| The dextrorotatory isomer of zopiclone is displaced from its salt by means of a base such as sodium hydroxide. |
| But ultraviolet light converts the molecule to the cis isomer, in which both propellers are on the same side. |
| It possesses an asymmetric carbon atom in its structure and is provided as the levo isomer. |
| The researchers were not very concerned about the occurrence of fumarate, which is the trans isomer of maleate, because the levels were relatively low. |
| Some of the alleles showed no significant difference in insensitivity to either isomer. |
| The article proclaimed the dawn of the age of atomic aircraft powered by hafnium-178 isomer reactors. |
