Phenothiazine derivatives, their production and use
First Claim
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1. A method for determining the concentration of an analyte in a solution, comprising the steps of:
- (a) contacting said solution with a conjugate formed by coupling a binding molecule capable of binding specifically to the analyte to a phenothiazine derivative of general formula (I);
##STR12## wherein R1, R2, R3, and R4 are the same or different and each is a C1-6 alkyl group, wherein at least one of said alkyl groups is substituted with a substituent so as to react with an amino group, thiol group, or carboxyl group on said binding molecule, and X- is a counter ion, and(b) measuring the amount of said conjugate that binds to said analyte.
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Abstract
There is disclosed a novel phenothiazine derivative of the general formula (I): ##STR1## wherein R1, R2, R3 and R4 are the same or different and are a C1-6 alkyl group and at least one of them has as a substituent a group which can react with amino group, thiol group or carboxyl group, and X- is a counter ion of the phenazathionium. Their production and the intermediates used in the production are also disclosed. The compound (I) is a derivative of methylene blue and is applicable to photodynamic therapy of cancer or immunoassays utilizing chemiluminescence.
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12 Claims
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1. A method for determining the concentration of an analyte in a solution, comprising the steps of:
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(a) contacting said solution with a conjugate formed by coupling a binding molecule capable of binding specifically to the analyte to a phenothiazine derivative of general formula (I);
##STR12## wherein R1, R2, R3, and R4 are the same or different and each is a C1-6 alkyl group, wherein at least one of said alkyl groups is substituted with a substituent so as to react with an amino group, thiol group, or carboxyl group on said binding molecule, and X- is a counter ion, and(b) measuring the amount of said conjugate that binds to said analyte. - View Dependent Claims (3, 5, 7, 9, 11)
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2. A method for determining the concentration of an analyte in a solution, comprising the steps of:
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(a) contacting said solution with (i) a conjugate formed by coupling a sample of said analyte or an analogue of said analyte to a phenothiazine derivative of general formula (I);
##STR13## wherein R1, R2, R3, and R4 are the same or different and each is a C1-6 alkyl group, wherein at least one of said alkyl groups is substituted with a substituent so as to react with an amino group, thiol group, or carboxyl group on said binding molecule, and X- is a counter ion, and (ii) a binding molecule capable of binding specifically to both said analyte and said conjugate, and(b) measuring the amount of said conjugate that binds to said binding molecule. - View Dependent Claims (4, 6, 8, 10, 12)
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Specification