The new product is unpopular, and sales are declining.

The new product was unpopular, and sales fell.

He used to be a member of the mafia.

Phosphine plays an important role in inorganic chemistry.

In organic chemistry, camphane is an important compound.

In this chemical experiment, we will use camphene as the main component.

Phenol is a type of chemical substance, and it has a distinctive strong smell.

Alkenes play an important role in organic chemistry.

He connected a new effects unit to his guitar.

This effector regulates the response of cells.