Phenazine derivatives
    1.
    发明授权
    Phenazine derivatives 失效
    PHENAZINE DERIVATIVES

    公开(公告)号:US3822265A

    公开(公告)日:1974-07-02

    申请号:US82469569

    申请日:1969-05-14

    申请人: HOFFMANN LA ROCHE

    IPC分类号: C07D51/80

    摘要: N-MONO- AND N,N''-DIOXIDES OF DIALKOXYPHENAZINES ARE PREPARED BY OXIDATION OF THE APPROPRIATE DIALKOXYPHENAZINES. THE CORRESPONDING MONO- AND DI-HYDROXYALKOXYPHENAZINES ARE PREPARED BY SELECTIVE ETHER CLEAVAGE OF THE DIALKOXY COMPOUNDS OR BY SELECTIVE MONO-OR DI-ALKYLATION OF THE DIHYDROXY OR PROTECTED MONO-HYDROXY COMPOUNDS. THE PHENAZINE N,N''-DIOXIDES POSSESS USEFUL ANTIMICROBIAL PROPERTIES.

    Fluorometric analysis of secondary alpha-amino acids
    3.
    发明授权
    Fluorometric analysis of secondary alpha-amino acids 失效
    二次氨基酸的荧光分析

    公开(公告)号:US3830629A

    公开(公告)日:1974-08-20

    申请号:US29868072

    申请日:1972-10-18

    申请人: HOFFMANN LA ROCHE

    IPC分类号: G01N33/50 G01N33/68 G01N31/22

    CPC分类号: G01N33/6809

    摘要: Secondary Alpha -amino acids are fluorometrically assayed by conversion to primary amines followed by reaction with known fluorogenic reagents and measurement of fluorescence. This technique is suitably adapted for automated analysis.

    摘要翻译: 次级α-氨基酸通过转化为伯胺进行荧光测定,随后与已知的荧光试剂反应并测量荧光。 该技术适用于自动化分析。

    Process for the preparation of aminomethylene malononitrile
    10.
    发明授权
    Process for the preparation of aminomethylene malononitrile 失效
    制备氨基乙烯马来酸酐的方法

    公开(公告)号:US3853946A

    公开(公告)日:1974-12-10

    申请号:US33801873

    申请日:1973-03-05

    申请人: HOFFMANN LA ROCHE

    IPC分类号: C07C121/02

    CPC分类号: C07C255/00

    摘要: This invention is directed to a process for the preparation of aminomethylene malononitrile from dialkyl aminoacylonitrile including intermediates therein. Aminomethylene malononitrile is a known compound which is a valuable intermediate in the synthesis of thiamine.

    摘要翻译: 本发明涉及由二烷基氨基腈制备氨基亚甲基丙二腈的方法,包括其中的中间体。 氨基亚甲基丙二腈是已知的化合物,其是合成硫胺素的有价值的中间体。