Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0321908449
ISBN 13: 978-0-32190-844-5

Chapter 15 - Section 15.2 - Fatty Acids - Questions and Problems - Page 519: 15.15

Answer

Both are carboxylic acids with 20 carbon atoms. However arachidonic acid contains 4 C=C double bonds in cis configuration and no functional group. On the other hand prostaglandin PGE1 contains one C=C double bond, ketone group and two carboxylic group along with a portion of carbon atoms in cyclic configuration.

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