Patents Assigned to Chinoin Gyogyszar es Vegyeszeti Termekek Gyara Rt.
  • Highly pure amidoximes
    Patent number: 5278309
    Abstract: A pure crystalline O-(2-hydroxy-3-piperidino-1-propyl) nicotinic acid amidoxime base of the Formula (Ib) ##STR1## is disclosed characterized by a melting point of 70.degree. to 73.degree. C., giving, when dissolved in an amount of 1 to 10 ml of concentrated sulfuric acid, a yellow homogeneous solution, and showing the following spectral characteristics:IR spectrum (kBr): .gamma. --O--C.dbd.N 1642 cm.sup.-1.sup.1 H-NMR spectrum (CDCL.sub.3, .delta. ppm): 1.48 m, (6H), CH.sub.2 -piperidine; 2.42 m, (6H), 3.times.CH.sub.2 --N; 3.36, br, (1H), CH--O; 4.08 m, (3H), 1--CH.sub.2, OH; 5.2, br, (2H), NH.sub.2 ; 7.30 m (1H), pyridine-5'; 7.92 m, 4', 8.62 m (1H), 6', 8.88 m, (1H), 2'.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: January 11, 1994
    Assignee: Chinoin Gyogyszar es Vegyeszeti Termekek Gyara RT.
    Inventors: Bela Bertok, Istvan Szekely, Angelika Thurna, Lajos Nagy, Eva Somfai, Sandor Botar, Antal Gajary, Kalman Takacs
  • Highly pure amidoximes
    Patent number: 5239077
    Abstract: The inventions is a purer form of O-(2-hydroxy-3-piperidino-1-propyl)nicotinic acid amidoxime hydrochloride.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: August 24, 1993
    Assignee: Chinoin Gyogyszar es Vegyeszeti Termekek Gyara Rt.
    Inventors: Bela Bertok, Istvan Szekely, Angelika Thurna, Lajos Nagy, Eva Somfai, Sandor Bota, Antal Gajary, Kalman Takacs