menadione
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menadione
[‚men·ə′dī·ōn] (organic chemistry)
C11H8O2(2-methyl-1,4-naphthoquinone) A compound used as a vitamin K supplement; important in blood clotting.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.