Abstract: To provide novel compounds that are promising as prodrug-type anticancer agents, a compound represented by general formula (I) or a salt thereof is provided.

Abstract: It is an object of the present invention to provide a fluorescence imaging probe capable of selectively visualizing target cells such as cells expressing ?-galactosidase (lacZ expressing cells) at a single-cell level in a red fluorescence region, and of performing co-staining together with GFP.

Abstract: Provided is a novel fluorescent probe which can be used in a spray manner, has an outstandingly high sensitivity-specificity with instantaneousness, and enables detection of a brain tumor.

Abstract: A fluorescent probe for sialidase activity detection, is a compound represented by the following general formula or a salt thereof. R1, if present, represents the same or different monovalent substituent present on a benzene ring. R2 and R3 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a halogen atom. R4 and R5 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a halogen atom. R6 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a fluorinated alkyl group having 1 to 5 carbon atoms. R6? represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and R6? may form, together with R3 or R5 a five to seven-membered heterocyclyl or heteroaryl containing a nitrogen atom to which R6? is bonded.

Abstract: A fluorescent probe is capable of detecting breast cancer, lung cancer, and squamous cell carcinoma. The fluorescent probe is also capable of detecting a benign tumor of a mammary gland.

Abstract: As a technique for detecting an influenza virus with an improved accuracy, there is provided a method for detecting an influenza virus in a biological sample by using a first probe, which is decomposed by an influenza virus-derived neuraminidase and a bacterium-derived neuraminidase to generate an optically detectable signal, and a second probe, which is decomposed by the bacterium-derived neuraminidase to generate an optically detectable signal and not decomposed by the influenza virus-derived neuraminidase.

Abstract: A compound is represented by the following general formula (I): The compound or a salt thereof provides a fluorescent probe for detecting carboxypeptidase activity. In the formula, R1 represents an alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 6 carbon atoms; T represents an amino acid residue or a residue of an amino acid derivative; S represents a C-terminal amino acid residue. represents a fluorophore, and the fluorophore is a fluorophore in which an absorption/fluorescence wavelength greatly changes or a quenched state changes to a fluorescent state by elimination of the —P(?O)(—R1)-T-S moiety.

Abstract: A fluorescent probe can be used to detect and visualize carboxypeptidase activity with high sensitivity. The fluorescent probe has, as a base nucleus, a fluorescent skeleton that functions in the visible light region, and makes carboxypeptidase activity detectable and visible, for example, within a cell or clinical specimen, with high sensitivity.

Abstract: To provide novel compounds that are promising as prodrug-type anticancer agents, a compound represented by general formula (I) or a salt thereof is provided.

Abstract: [Problem] To provide a novel fluorescent probe for super-resolution imaging that uses fluorescent light emission characteristics that originate from an intermolecular nucleophilic addition-dissociation equilibrium reaction, and to provide a super-resolution fluorescent imaging method that uses the probe.

Abstract: [Problem] A problem addressed by the present invention is to provide a novel fluorescent probe having excellent tissue permeability that is capable of detecting the peptidase activity expressed at a high level in cancer cells and the like as a response of long-wavelength red fluorescence.

Abstract: It is an object of the present invention to provide a fluorescence imaging probe capable of selectively visualizing target cells such as cells expressing ?-galactosidase (lacZ expressing cells) at a single-cell level in a red fluorescence region, and of performing co-staining together with GFP.

Abstract: [Problem] To provide a novel fluorescent probe for dipeptidyl peptidase IV, and a detection method and a detection kit using the fluorescent probe. [Solution] A fluorescent probe for detecting dipeptidyl peptidase IV (DPP-IV), said probe comprising a compound represented by formula (I) or a salt thereof. In formula (I): A and B are either the same or different and independently represent an amino acid residue, provided that A is bonded via an amide bond to NH in an adjacent formula and B is bonded via an amide bond to A; R1 represents hydrogen atom(s) or 1 to 4 substituents bonded to the benzene ring, said substituents being either the same or different; R2, R3, R4, R5, R6 and R7 independently represent a hydrogen atom, a hydroxyl group, an alkyl group or a halogen atom; R8 and R9 independently represent a hydrogen atom or an alkyl group; and X represents a C1-C3 alkylene group.

Abstract: [Problem] To provide a fluorescent probe that detects calpain activity in cells at high sensitivity. [Solution] A compound represented by the following general formula (I) or a salt thereof.

Abstract: [Problem] To provide the following: a novel fluorescent probe for detecting a compound, such as glutathione, that contains a —SH group; a detection method using said fluorescent probe; and a detection kit containing said probe.

Abstract: [Problem] To provide a fluorescent probe that detects calpain activity in cells at high sensitivity. [Solution] A compound represented by the following general formula (I) or a salt thereof.

Abstract: Provided is an enzyme-specific fluorescent compound capable of being retained in cells, which can emit fluorescence specifically in a target cell, particularly a cell capable of expressing a reporter enzyme such as ?-galactosidase, and can covalently bind to a protein in the cell to exhibit an excellent property of being retained in the cell. The fluorescent compound comprises a compound represented by formula (I?) or a salt thereof. In formula (I?), A, X, Y and R1 to R9 are as described in claim 1.

Abstract: [Problem] To provide a novel fluorescent probe for super-resolution imaging that uses fluorescent light emission characteristics that originate from an intermolecular nucleophilic addition-dissociation equilibrium reaction, and to provide a super-resolution fluorescent imaging method that uses the probe.

Abstract: [Problem] To provide a novel fluorescent probe for dipeptidyl peptidase IV, and a detection method and a detection kit using the fluorescent probe. [Solution] A fluorescent probe for detecting dipeptidyl peptidase IV (DPP-IV), said probe comprising a compound represented by formula (I) or a salt, thereof. In formula (I): A and B are either the same or different and independently represent an amino acid residue, provided that A is bonded via an amide bond to NH in an adjacent formula and B is bonded via an amide bond to A; R1 represents hydrogen atom(s) or 1 to 4 substituents bonded to the benzene ring, said substituents being either the same or different; R2, R3, R4, R5, R6 and R7 independently represent a hydrogen atom, a hydroxyl group, an alkyl group or a halogen atom; R8 and R9 independently represent a hydrogen atom or an alkyl group; and X represents a C1-C5 alkylene group.

Abstract: [Problem] To provide a fluorescent probe that detects calpain activity in cells at high sensitivity. [Solution] A compound represented by the following general formula (I) or a salt thereof.