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US3819702A Expired / Lapsed US ⏱️ 0.0 years remaining

Butyramidine

Assignee: Cephalon France SAS
•
Filing: 1971-06-18
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Granted: 1974-06-25
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Expires: 1991-06-18
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Abstract

Abstract NEW DERIVATIVES AND ANALOGUES OF BUTYRAMIDINE HAVING THE GENERAL FORMULA: A-O-CH2-CH(-OH)-CH2-C(=N-R1)-N(-R2)-R3 IN WHICH A REPRESENTS A-NAPHTHYL OR B-NAPHTHYL, R3 REPRESENTS A HYDROGEN ATOM OR A LOWER ALKYL GROUP HAVING 1 TO 3 CARBON ATOMS, R2 REPRESENTS A HYDROGEN ATOM, A HYDROXYL GROUP OR A LOWER ALKYL GROUP HAVING 1 TO 3 CARBON ATOMS, AND R1 REPRESENTS A HYDROGEN ATOM, R1 AND R2 CONSIDERED TOGETHER BEING CAPABLE OF FORMING WITH THE TWO NITROGEN ATOMS AND THE CARBON ATOM OF THE AMIDINE FUNCTION OF 2-IMIDAZOLINYL OR 1,4,5,6-TETRAHYDRO-2-PYRIMIDINYL RADICAL WHEN R3 IS A HYDROGEN ATOM. THE COMPOUNDS OF FORMULA I AND THE NON-TOXIC ACID ADDITION SALTS THEREOF ARE ACTIVE B-BLOCKING AGENTS AND ARE USED IN THE TREATMENT OF CARDIAC TROUBLES.

Inventors

  • 👤 V Lafon

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 12:09
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/22; C07C; C07C259/00; C07C259/12; C07C259/14; C07D233/00; C07D233/04; C07D233/20; C07D233/22

Claims Analysis

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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-06-24 1977-12-24 1978-06-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-06-24 1981-12-24 1982-06-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-06-24 1985-12-24 1986-06-25 $7700.00 Window Closed / Lapsed

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