Nomenclature Archaic

The many ways to make polymers can be broken into two types of reactions based on the mechanisms of the polymerization, step and chain reactions (5). This reaction classification was termed condensation or addition reactions in the past but this archaic nomenclature is slowly dying away. The labels step and chain were developed for the two types of polymerizations by Flory and Mark (5, 6). All step reactions conduct the same stepwise reaction between all reactive entities in the reaction mixture. The... 

The same is true for hydroxyproline, which occurs only in structural proteins. Collagen is rich in both proline and hydroxyproline. The hydroxy group actually would justify the inclusion of this amino acid in Group II. These secondary amino acids are still called imino acids after some archaic chemical nomenclature. Compounds containing the group... 

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