THENEW BIS-(4, 7-DIHUDROXYCOUMARINYL-3 ACETIC ACID

摘要

The new bis-(4,7-dihydroxycoumarinyl-3)-acetic acid of the formula AND THE METHOD OF PREPARING IT COMPRISING REACTING 4,7-DIHYDROXYCOUMARIN WITH GLYOXYLIC ACID. The glyoxylic acid may be in the form of hydrate or a solution of hydrate.