Phthaloyl Peroxide Crab (image) University of Texas at Austin Share Print E-Mail Caption The crab represents the chemical phthaloyl peroxide. The claws are the reactive regions of the molecule that undergo the reaction. The crab is grabbing a molecule (forming the carbon-oxygen bond) then tearing a hydrogen atom off. Credit Image was created by Mingjun Quan, based on a design by Changxia Yuan. Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.