Diaminofluorescein derivatives

Details Diaminofluorescein derivatives Diaminofluorescein derivatives

2006-05-08

2009-11-17

Solola, Taofiq A (Department: 1625)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

Reexamination Certificate

active

07618997

ABSTRACT:
A compound represented by the following formula (I):wherein R1and R2represent amino groups that substitute at adjacent positions on the phenyl ring, provided that either of R1and R2represents a mono(C1-6alkyl)-substituted amino group and the other represents an unsubstituted amino group; and R3and R4independently represent hydrogen atom or an acyl group, and an agent for measurement of nitrogen monoxide which comprises said compound.

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