Diaminofluorescein derivatives
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United States of America Patent
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Dec 21, 2004
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N/A
app pub date -
Apr 14, 2003
filing date -
Jan 20, 2000
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Abstract
A compound represented by the following formula (I): ##STR1## wherein R.sup.1 and R.sup.2 represent amino groups that substitute at adjacent positions on the phenyl ring, provided that either of R.sup.1 and R.sup.2 represents a mono(C.sub.1-6 alkyl)-substituted amino group and the other represents an unsubstituted amino group; and R.sup.3 and R.sup.4 independently represent hydrogen atom or an acyl group, and an agent for measurement of nitrogen monoxide which comprises said compound.
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