sentence: Many medicines contain parts made from benzene.
sentences_before: Benzene is carcinogenic, which means it can cause cancer. It has many real-world uses. It is used as an additive in gasoline, plastics, synthetic rubber, dyes and it is an industrial solvent, which means it can dissolve many other chemical molecules. Benzene is also a natural part of crude oil and is therefore present in gasoline.
concept_name: medicine
headings: Benzene
categories: Organic compounds