aminopterin(redirected from Animopterin)
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organic compound that is a starting material in, an intermediate in, or an end product of metabolism. Starting materials are substances, usually small and of simple structure, absorbed by the organism as food. These include the vitamins and essential amino acids.
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C19H20N8O5·2H2O A yellow crystalline acid which is similar to folic acid and is used clinically as an antagonist of folic acid.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.