US4226993A
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Amino-functionalized phthalhydrazides
Assignee: Bayer Corp
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Filing: 1979-04-30
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Granted: 1980-10-07
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Expires: 1999-04-30
Abstract
Abstract Amino-functionalized phthalhydrazides of the formula: <IMAGE> wherein one of R5 and R6 is hydrogen and the other is -NR7R8; R7 is hydrogen or straight chain alkyl containing 1-4 carbon atoms and R8 is H2N-CH2)n wherein n=2-8. The compounds are intermediates in the synthesis of chemiluminescent phthalhydrazide-labeled conjugates which are useful as reagents in specific binding assays for determining ligands or their specific binding partners in liquid media.
Inventors
- 👤 Robert T. Buckler
- 👤 Hartmut R. Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:51
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07D237/00; C07D237/26; C07D237/30; C07D237/32; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/531; G01N33/532; G01N33/533
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
45 words
A compound of the formula: ##STR33## wherein one of R 5 and R 6 is hydrogen and the other is --NR 7 R 8 ; R 7 is hydrogen or straight chain alkyl having 1-4 carbon atoms and R 8 is H.sub.2 N--CH.sub.2).sub.n wherein n=2-8.
Claim 2
Dependent Claim
45 words
A compound of the formula: ##STR33## wherein one of R 5 and R 6 is hydrogen and the other is --NR 7 R 8 ; R 7 is hydrogen or straight chain alkyl having 1-4 carbon atoms and R 8 is H.sub.2 N--CH.sub.2).sub.n wherein n=2-8.
Claim 3
Dependent Claim
14 words
The compound of claim 1 wherein R 5 is --NR 7 R 8 .
Claim 4
Dependent Claim
7 words
The compound of claim 2 wherein n=4.
Claim 5
Dependent Claim
10 words
The compound of claim 3 wherein R 7 is ethyl.
Claim 6
Dependent Claim
7 words
The compound of claim 2 wherein n=6.
Claim 7
Dependent Claim
10 words
The compound of claim 5 wherein R 7 is ethyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |