申请人:Nagano Tetsuo
公开号:US20120052518A1
公开(公告)日:2012-03-01
A compound represented by the formula (I) or a salt thereof (R
1
represents hydrogen atom, or a substituent; R
2
to R
7
represent hydrogen atom, hydroxyl group, an alkyl group, or a halogen atom; R
8
and R
9
represent hydrogen atom, or an alkyl group; X represents a C
1
-C
3
alkylene group; and R
10
represents an acyl group), which promptly causes a structural change from a non-fluorescent closed ring structure to a strongly fluorescent open ring structure by hydrolysis of an acyl group, and is useful as a fluorescent probe for measuring a protease showing superior suitability for quantification.