Systems: Greek Letters are Used in Two Ways
Greek letters are also sometimes used to denote positions relative to the carboxyl carbon. The following diagram illustrates how Greek letters are used to denote positions relative to either end of a fatty acid chain.
- The first carbon following the carboxyl
carbon is the alpha carbon.
- The second carbon following the
carboxyl carbon is the beta carbon.
- The last carbon in the chain, farthest
from the carboxyl group, is the omega