The benzene ring of a biologically active compound may often be replaced by a thiophene without loss of activity.
Its chemical structure consists of a benzene ring substituted with a hydroxy group and a propenyl group.
In-methylcyclophanes in particular have a methyl group in proximity to a benzene ring.
The configuration of six carbon atoms in aromatic compounds is known as a benzene ring, after the simplest possible such hydrocarbon, benzene.
Starlicide is a small molecule in which a central benzene ring is modified by amine, chloro and methyl substituents in a specific pattern.
The main differences of the synephrine isomers compared for example to the ephedrines are the hydroxy-substitutions on the benzene ring.
There are four peaks between 130-140 ppm from the carbons in the benzene ring.
The etizolam molecule differs from a benzodiazepine in that the benzene ring has been replaced by a thiophene ring, making the drug a thienodiazepine.
