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Title:
IMPROVED REAGENT FOR CANNABINOID IMMUNOASSAY
Document Type and Number:
Japanese Patent JP2009051839
Kind Code:
A
Abstract:

To provide an immunoassay reagent containing an anti-cannabinoid antibody which recognizes the major metabolites of the active ingredient THC of marijuana as much as possible and has a wide range of specificity.

A new benzopyran derivative which has a chemical linker to easily conjugate with a protein and is represented by formula (1) (wherein R1 is an alkyl group; R2 and R3 are each a lower hydrocarbon group which may have a substituent; and a, b, and c are each a single bond or a double bond) is synthesized and allowed to conjugate with a proteinaceous carrier to prepare an immunogen, and this immunogen is administered to an animal, and from splenocytes of the immunized animal, an anti-cannabinoid antibody having an average cross-reactivity of at least about 80% to all of the major THC metabolites is obtained.


Inventors:
HUI RAYMOND ALBERT
ROSEN STEVEN MARK
SALMONE SALVATORE JOSEPH
Application Number:
JP2008217504A
Publication Date:
March 12, 2009
Filing Date:
August 27, 2008
Export Citation:
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Assignee:
HOFFMANN LA ROCHE
International Classes:
A61K39/00; C07D311/20; A61K39/395; G01N33/53; C07D311/58; C07D311/70; C07D405/12; C07D417/12; C07K16/00; G01N33/531; G01N33/94; C12P21/08
Domestic Patent References:
JPH01273582A1989-11-01
JPH06211867A1994-08-02
JPS63192770A1988-08-10
JPS63216880A1988-09-09
Foreign References:
US2354492A1944-07-25
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Naganuma Akio