US4261893A
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Bis-phthalimide intermediates
Assignee: Bayer Corp
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Filing: 1979-08-20
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Granted: 1981-04-14
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Expires: 1999-08-20
Abstract
Abstract Bis-phthalimide intermediates of the formula: <IMAGE> wherein one of R9 and R10 is hydrogen and the other is -NR11R12; R11 is hydrogen or straight stain alkyl containing 1-4 carbon atoms and R12 is <IMAGE> wherein n=1-3. The compounds are intermediates in the synthesis of chemiluminescent-labeled conjugates which are useful as reagents in specific binding assays for determining ligands or their specific binding partners in liquid media.
Inventors
- 👤 Robert C. Boguslaski
- 👤 Robert J. Carrico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:05
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07D237/00; C07D237/26; C07D237/30; C07D237/32; C07D495/00; C07D495/02; C07D495/04; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/16; C07H19/20; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/531; G01N33/532; G01N33/533; Y; Y10; Y10S; Y10S436/00; Y10S436/80; Y10S530/00; Y10S530/802; Y10S530/806
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
44 words
A compound of the formula: ##STR50## wherein one of R 9 and R 10 is hydrogen and the other is --NR 11 R 12 ; R 11 is hydrogen or straight chain alkyl containing 1-4 carbon atoms and R 12 is ##STR51## wherein n=1-3.
Claim 2
Dependent Claim
44 words
A compound of the formula: ##STR50## wherein one of R 9 and R 10 is hydrogen and the other is --NR 11 R 12 ; R 11 is hydrogen or straight chain alkyl containing 1-4 carbon atoms and R 12 is ##STR51## wherein n=1-3.
Claim 3
Dependent Claim
14 words
The compound of claim 1 wherein R 9 is --NR 11 R 12 .
Claim 4
Dependent Claim
7 words
The compound of claim 2 wherein n=1.
Claim 5
Dependent Claim
10 words
The compound of claim 3 wherein R 11 is hydrogen.
Claim 6
Dependent Claim
10 words
The compound of claim 3 wherein R 11 is ethyl.
References Cited (Backward Citations)
US3275651A
Cited
US3579536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |