申请人:Urano Yasuteru
公开号:US20140248654A1
公开(公告)日:2014-09-04
Provided is a compound represented by formula (I), which can be used as a fluorescent probe that becomes highly fluorescent only in an intracellular acidic environment and can be adapted to the fluorescent imaging of an intracellular vesicle that is a microstructure.
In the formula, R
1
and R
2
independently represent a hydrogen atom, or an alkyl group which may be substituted (wherein R
1
and/or R
2
represents an alkyl group which may be substituted); R
3
, R
4
, R
5
, R
6
, R
7
and R
8
independently represent a hydrogen atom, a halogen atom, or the like; X represents a functional group to which a labeling site or a target-accumulating site can be introduced, or the like; Y represents a halogen atom, an alkyl group which may be substituted, or the like; m represents an integer of 0 to 5; and n represents an integer of 0 to 5.