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.
1 The methyl group on the second carbon atom makes the name 2-methylpentanal. 2  There are five carbon atoms in the LCC. 3  The carbonyl carbon atom is C3, and there are methyl groups on C2 and C4. 4  The IUPAC name is 2,4-dimethyl-3-pentanone.