My company specializes in the manufacture of fine chemicals.

Chemotransmitters play an important role in the transmission of information between nerve cells.

Stoichiometry is a method for calculating the amount of substances in a chemical reaction.

No chemical flavoring is used in this ramen at all.

The National Research and Development Agency plays a crucial role in advancing science and technology.

He is taking sedatives to control his stress.

My brother has been taking immunosuppressants after his transplant surgery.

I spray deodorizer in my room every day.

He was prescribed an antidepressant.

He was prescribed antidepressants by his doctor.