LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Retinal. Molecular model of the aldehyde retinal (C20.H28.O), one of the forms of vitamin A and also known as retinaldehyde. This chemical is produced by living organisms by oxidative cleavage of carotenoids. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white) and oxygen (red). Illustration.
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