Infobox references. Tryptophan (abbreviated as Trp or W; encoded by the codon UGG) is an Î±-amino acid that is used in the biosynthesis of proteins. It contains an Î±-amino group, an Î±-carboxylic acid group, and a side chain indole, classifying it as a non-polar, aromatic amino acid.
toluene is a common name-The IUPAC name for toluene is methylbenzene.he use of this trivial form (acetate for ethanoic acid in general) is so common that this is called a retained IUPAC name.
It has a sweet, sharpodor. Most people, but not all, can smell toluene at levels that are not hazardous. Toluene belongs to alarge class of chemicals called organic solvents. Alcohols, acetone, methyl ethyl ketone,trichloroethane, and xylene are a few other examples of organic solvents.