Abstract: The invention relates to the use of a compound having formula (I) as an enzymatic substrate for the detection of a nitroreductase activity, wherein: W1, W2, W3 and W4 are independently H, Br, Cl, F, I, alkyl, alkoxy, thiomethyl, perfluoroalkyl, nitro, cyano, carboxyl (including the esters or amides thereof) or any combination of same; n=0, 1 or 2; X is NR, CZ5Z6, S or O, R being H, alkyl, aralkyl, aryl, alkanoic or alkylsulphonic, Z5 and Z6 being an alkyl; Y is N or N+R, R being alkyl, aralkyl, aryl, alkanoic or alkylsulphonic; Z1, Z2, Z3 and Z4 are independently H, Br, Cl, F, I, alkyl, aryl, alkoxy, perfluoroalkyl, nitro, cyano, carboxyl, sulphonyl, including the sulphonyl or carboxyl amides or esters thereof, and the salts of same.

Abstract: The present invention relates to the use of a compound of the following formula (I), as an enzyme substrate for the detection of a peptidase activity or as a pH indicator: according to which: Y1 is a peptide, H or an alkyl; W1, W2, W3 and W4 are independently H, Br, Cl, F, I, alkyl, alkoxy, thiomethyl, perfluoroalkyl, nitro, cyano, carboxyl (including the esters or amides thereof) or any combination thereof; n=0, 1 or 2; U is N or N+R and V is CZ6N or N+R or else V is N or N+R and U is CZ6; R is H, alkyl, aralkyl, aryl, alkanoyl or alkylsulfonyl; Z1, Z2, Z3, Z4 and Z5 are independently H, Br, Cl, F, I, alkyl, aryl, alkoxy, perfluoroalkyl, nitro, cyano, carboxyl, sulfonyl, including the carboxyl or sulfonyl esters or amides, and salts thereof.

Abstract: The invention relates to the use of a compound having formula (I) as an enzymatic substrate for the detection of a nitroreductase activity, wherein: W1, W2, W3 and W4 are independently H, Br, Cl, F, I, alkyl, alkoxy, thiomethyl, perfluoroalkyl, nitro, cyano, carboxyl (including the esters or amides thereof) or any combination of same; n=0, 1 or 2; U is N or N+R and V is CZ6N or N+R or V is N or N+R and U is CZ6, R being H, alkyl, aralkyl, aryl, alkanoic or alkylsulphonic; and Z1, Z2, Z3, Z4, Z5 and Z6 are independently H, Br, Cl, F, I, alkyl, aryl, alkoxy, perfluoroalkyl, nitro, cyano, carboxyl, sulphonyl, including the sulphonyl or carboxyl amides or esters thereof, and the salts of same.

Abstract: The present invention relates to the use of a compound of the following formula (I) for detecting a peptidase activity and/or a variation in pH: according to which: Y1 is a peptide, H or an alkyl; W1, W2, W3 and W4 are independently H, Br, Cl, F, I, alkyl, alkoxy, thiomethyl, perfluoroalkyl, nitro, cyano, carboxyl (including the esters or amides thereof) or any combination thereof; n=0, 1 or 2; X is NR, CZ5Z6, S or O, R being H, alkyl, aralkyl, aryl, alkanoyl or alkylsulfonyl, Z5 and Z6 being an alkyl; Y is N or N+R, R being alkyl, aralkyl, aryl, alkanoyl or alkylsulfonyl; Z1, Z2, Z3 and Z4 being independently H, Br, Cl, F, I, alkyl, aryl, alkoxy, perfluoroalkyl, nitro, cyano, carboxyl, sulfonyl, including the carboxyl or sulfonyl esters or amides, and salts thereof.

Abstract: An enzyme substrate of formula (I) detects peptidase activity: Methods of detecting peptidase activity of a microorganism may include incubating a biological sample with the enzyme substrate of formula (I), and detecting peptidase activity if a microorganism having peptidase activity is present in the biological sample. The enzyme substrate may be included in a reaction medium.

Abstract: The present invention relates to an enzyme substrate for detecting nitroreductase activity of formula (I) below: in which X is S, NX1, O or NX1-CO; R1 is nothing or a substituent selected from Cl, CH3, Br, F, I, alkyl, aryl and carboxyl; R2 is nothing or a substituent selected from Cl, O—CH2—O, O—CH3, F, diethylenediamine-CH3, NR3R4, Br, I, alkyl, aryl, carboxyl, NO2 and R3 and R4 are independently H or an alkyl group containing from 1 to 4 carbon atoms; and X1 is selected from H, CH3, C2H4Ph, OH, alkyl and aryl.

Abstract: The present invention relates to the use of a compound of the following formula (I) for detecting a peptidase activity and/or a variation in pH: according to which: Y1 is a peptide, H or an alkyl; W1, W2, W3 and W4 are independently H, Br, Cl, F, I, alkyl, alkoxy, thiomethyl, perfluoroalkyl, nitro, cyano, carboxyl (including the esters or amides thereof) or any combination thereof; n=0, 1 or 2; X is NR, CZ5Z6, S or O, R being H, alkyl, aralkyl, aryl, alkanoyl or alkylsulfonyl, Z5 and Z6 being an alkyl; Y is N or N+R, R being alkyl, aralkyl, aryl, alkanoyl or alkylsulfonyl; Z1, Z2, Z3 and Z4 being independently H, Br, Cl, F, I, alkyl, aryl, alkoxy, perfluoroalkyl, nitro, cyano, carboxyl, sulfonyl, including the carboxyl or sulfonyl esters or amides, and salts thereof.

Abstract: The invention relates to the use of a compound having formula (I) as an enzymatic substrate for the detection of a nitroreductase activity, wherein: W1, W2, W3 and W4 are independently H, Br, Cl, F, I, alkyl, alkoxy, thiomethyl, perfluoroalkyl, nitro, cyano, carboxyl (including the esters or amides thereof) or any combination of same; n=0, 1 or 2; U is N or N+R and V is CZ6 N or N+R or V is N or N+R and U is CZ6, R being H, alkyl, aralkyl, aryl, alkanoic or alkylsulphonic; and Z1, Z2, Z3, Z4, Z5 and Z6 are independently H, Br, Cl, F, I, alkyl, aryl, alkoxy, perfluoroalkyl, nitro, cyano, carboxyl, sulphonyl, including the sulphonyl or carboxyl amides or esters thereof, and the salts of same.

Abstract: The present invention relates to the use of a compound of the following formula (I), as an enzyme substrate for the detection of a peptidase activity or as a pH indicator: according to which: Y1 is a peptide, H or an alkyl; W1, W2, W3 and W4 are independently H, Br, Cl, F, I, alkyl, alkoxy, thiomethyl, perfluoroalkyl, nitro, cyano, carboxyl (including the esters or amides thereof) or any combination thereof; n=0, 1 or 2; U is N or N+R and V is CZ6N or N+R or else V is N or N+R and U is CZ6; R is H, alkyl, aralkyl, aryl, alkanoyl or alkylsulfonyl; Z1, Z2, Z3, Z4 and Z5 are independently H, Br, Cl, F, I, alkyl, aryl, alkoxy, perfluoroalkyl, nitro, cyano, carboxyl, sulfonyl, including the carboxyl or sulfonyl esters or amides, and salts thereof.

Abstract: The invention relates to the use of a compound having formula (I) as an enzymatic substrate for the detection of a nitroreductase activity, wherein: W1, W2, W3 and W4 are independently H, Br, Cl, F, I, alkyl, alkoxy, thiomethyl, perfluoroalkyl, nitro, cyano, carboxyl (including the esters or amides thereof) or any combination of same; n=0, 1 or 2; X is NR, CZ5Z6, S or O, R being H, alkyl, aralkyl, aryl, alkanoic or alkylsulphonie, Z5 and Z6 being an alkyl; Y is N or N+R, R being alkyl, aralkyl, aryl, alkanoic or alkylsulphonic; Z1, Z2, Z3 and Z4 are independently H, Br, Cl, F, I, alkyl, aryl, alkoxy, perfluoroalkyl, nitro, cyano, carboxyl, sulphonyl, including the sulphonyl or carboxyl amides or esters thereof, and the salts of same.

Abstract: The present invention relates to an enzyme substrate for detecting nitroreductase activity of formula (I) below: in which X is S, NX1, O or NX1-CO; R1 is nothing or a substituent selected from Cl, CH3, Br, F, I, alkyl, aryl and carboxyl; R2 is nothing or a substituent selected from Cl, O—CH2—O, O—CH3, F, diethylenediamine-CH3, NR3R4, Br, I, alkyl, aryl, carboxyl, NO2 and R3 and R4 are independently H or an alkyl group containing from 1 to 4 carbon atoms; and X1 is selected from H, CH3, C2H4Ph, OH, alkyl and aryl.

Abstract: The present invention relates to an enzyme substrate for detecting peptidase activity in microorganisms, of formula (I) below: in which X is S; NX1; O; or NX1-CO; R1 is nothing or one of the following substituents: Cl, Br, F, I, OH, or an alkyl, aryl or carboxyl group; R2 is nothing or one of the following substituents: Cl; O—CH2—O; O—CH3; F, diethylenediamine-CH3, NR3R4, Br, I, OH, an alkyl, aryl or carboxyl group, NO2, or X1 is selected from: H, C2H4Ph, OH, an alkyl group and an aryl group; R3 and R4 are independently H or an alkyl group containing from 1 to 4 carbon atoms and P is a peptide.