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(organic chemistry)
C7H8N4O2·H2O Alkaloid from tea leaves; bitter-tasting white crystals slightly soluble in water and alcohol, melts at 272°C; used in medicine.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(1,3-dimethylxanthine), an alkaloid of the group of urines; small quantities are found in tea leaves. In pharmacological activity, theophylline is similar to theobromine, from which it differs in its more pronounced diuretic action. Theophylline dilates the blood vessels of the heart and the bronchial musculature and excites the central nervous system. It is prescribed internally, in powder form, and rectally, as suppositories. It is a constituent of Teofedrin and other compound preparations. It is obtained by chemical synthesis from dimethylurea and ethyl cyanoacetate.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Sustaire has attended more than 1,600 hours of GEOINT and intelligence training courses throughout her career.
This time of year, headaches are a frequent complaint among the middle-schoolers she sees every day, Sustaire said.
He wanted Sustaire to know he'd chosen to sing her praises.
That's because Sustaire handles school nurse duties for both the middle school and Cottage Grove High School, while fellow nurse Bill Bartram tends to the South Lane School District's elementary schools.
"They just never liked wrestling each other," Doug Sustaire said.
Trevor Sustaire pinned his two opponents at districts in a total of 2 minutes, 26 seconds.
"After we're done wrestling we don't really coach each other much, but we tell each other pointers that we notice that could have been done different," Trevor Sustaire said.
Sustaire plays sports and is part of the state champion soccer team.