Chiral drugs are a subgroup of drug substances that contain one or more chiral centers.
Many team executives believed the move was needed, but many players rely on energy-enhancing substances that contain ephedra to get through the season.
Not all substances that contain hydrogen, however, are acids, and the first really satisfactory definition of an acid was given by Justus von Liebig of Germany in 1838.
Dams for leachate store very toxic substances that contain a large amount of organic material and, probably, heavy metals; they therefore constitute an important threat to the environment.
In general, organic compounds are substances that contain carbon (C), and carbon atoms provide the key structural framework that generates the vast diversity of organic compounds.
These two hormones are the only biologically active substances that contain iodine, and they cannot be produced in the absence of iodine.
Radioactive dosage forms, or radiopharmaceuticals, are substances that contain one or more radioactive atoms and are used for diagnosis or treatment of disease.
Organosulfur compound, also spelled organosulphur compound, also called organic sulfur compound, a subclass of organic substances that contain sulfur and that are known for their varied occurrence and unusual properties.
Hemicellulose is a dietary fiber consisting of a heterogenous group of polysaccharide substances that contain a number of sugars including xylose, mannose, galactose, arabinose and glucuronic acids.
Human exposure to antimony may take place not only by breathing air, drinking water and by eating foods that contain it but also by skin contact with soil, water and other substances that contain it (Sang et al. 2008).
