Gadopentetate Dimeglumine(钆喷酸葡胺), a complex of gadolinium with a chelating agent, diethylenetriamine penta-acetic acid, is an extracellular intravenous contrast agent used in magnetic resonance imaging.

Ecabet sodium(伊卡倍特钠) is a widely employed mucoprotective agent for the treatment of gastric ulcers.

Tryptophol(色醇) is an aromatic alcohol found as a secondary product of alcoholic fermentation that induces sleep in humans.

Indole-3-carboxylic acid(吲哚-3-羧酸) is a normal urinary indolic tryptophan metabolite which belongs to a class of organic compounds known as indolecarboxylic acids and derivatives.

Oxindole(2-吲哚酮) is an aromatic heterocyclic organic compound which causes sedation, muscle weakness, hypotension, and coma when dosed in excess.

Squalene(角鲨烯), a naturally occurring substance found in plants, animals and humans, is a component of some adjuvants that is added to vaccines to enhance the immune response.

4-Hydroxyphenylacetic acid(对羟基苯乙酸), a chemical compound found in olive oil and beer, is an intermediate used to synthesize atenolol and 3,4-dihydroxyphenylacetic acid.

2-Furoic acid(糠酸) is an organic compound most widely found in food products as a preservative and a flavoring agent.