Peptide derivatization method to increase fragmentation information from MS/MS spectra
    2.
    发明申请
    Peptide derivatization method to increase fragmentation information from MS/MS spectra 有权
    肽衍生化方法从MS / MS谱增加碎片信息

    公开(公告)号:US20080026479A1

    公开(公告)日:2008-01-31

    申请号:US11494383

    申请日:2006-07-27

    IPC分类号: G01N33/00

    摘要: A method of facilitating analysis of a peptide in a mass spectrometer comprising derivatizing the C-terminus of the peptide with an amino acid residue via a reaction with a carbodiimide reagent, yielding a derivative peptide, ionizing the derivative peptide with a double charge, and fragmenting the ionized derivative peptide in a mass spectrometry system, wherein binary fragments of the ionized derivative each include a charge, facilitating sequence analysis of the peptide.

    摘要翻译: 一种促进质谱分析肽的方法,包括通过与碳二亚胺试剂的反应将肽的C末端与氨基酸残基衍生化,产生衍生肽,以双电荷离子化衍生肽,并将其断裂 质谱系统中的离子化衍生肽,其中电离衍生物的二元片段各自包含电荷,便于肽的序列分析。

    Ionization chamber for reactive samples
    3.
    发明授权
    Ionization chamber for reactive samples 有权
    电离室用于反应性样品

    公开(公告)号:US06608318B1

    公开(公告)日:2003-08-19

    申请号:US09629467

    申请日:2000-07-31

    IPC分类号: G21F502

    CPC分类号: H01J27/02

    摘要: The present invention relates to a mass spectrometer that includes an ionization source having a chamber for ionizing a fluid sample. The ionization chamber has surfaces to reduce the overall interaction with reactive samples. The inner surface walls of the ionization chamber may be formed from an inorganic conductive nitride or disulfide material or may be applied to a substrate as a coating. The invention also includes a method for reducing the interaction of a reactive analyte with the inner wall of the chamber by application or coating the inner wall of the chamber with an inert conductive material.

    摘要翻译: 本发明涉及一种质谱仪,其包括具有用于离子化流体样品的室的电离源。 电离室具有减少与反应性样品的整体相互作用的表面。 电离室的内表面壁可以由无机导电氮化物或二硫化物材料形成,或者可以作为涂层施加到基材上。 本发明还包括通过用惰性导电材料施加或涂覆室的内壁来减少反应性分析物与室内壁的相互作用的方法。

    Mask plate with lobed aperture
    4.
    发明授权
    Mask plate with lobed aperture 失效
    面孔板带有裂孔

    公开(公告)号:US06545271B1

    公开(公告)日:2003-04-08

    申请号:US09655758

    申请日:2000-09-06

    IPC分类号: B01D5944

    CPC分类号: H01J49/4215 H01J49/06

    摘要: An apparatus and method for removing neutral noise from a quadrupole mass filter ion beam. A mask plate has a lobed aperture centered on a longitudinal axis and positioned between a quadrupole mass filter exit end and an ion detector. The mask plate operates to remove neutral atoms from the ion beam that may interfere with instrument sensitivities. The lobed aperture passes the ion beam with little loss of the ion beam intensity. The invention substantially maintains signal intensity and removes unwanted noise from a mass spectrometer.

    摘要翻译: 一种用于从四极质量过滤器离子束去除中性噪声的装置和方法。 掩模板具有以纵向轴线为中心并且位于四极质量过滤器出口端和离子检测器之间的裂纹孔。 掩模板用于从离子束去除可能干扰仪器灵敏度的中性原子。 叶片的孔径通过离子束,几乎没有离子束强度的损失。 本发明基本上保持信号强度并从质谱仪中去除不想要的噪声。

    Formation of halogenated hydrocarbons from hydrocarbons
    5.
    发明授权
    Formation of halogenated hydrocarbons from hydrocarbons 失效
    从烃形成卤代烃

    公开(公告)号:US4654449A

    公开(公告)日:1987-03-31

    申请号:US448112

    申请日:1982-12-09

    IPC分类号: C07C17/10 C07C17/24

    CPC分类号: C07C17/10

    摘要: Hydrocarbons and other compounds are halogenated to halocarbon products by contact with a halocarbon in the presence of an acidic zeolite catalyst such as ZSM-5. The process is particularly useful for the halogenation of methane to form chemicals of higher value.

    摘要翻译: 在酸性沸石催化剂如ZSM-5的存在下,碳氢化合物和其它化合物通过与卤代烃接触卤代卤代烃产物。 该方法特别适用于卤化甲烷以形成更高价值的化学品。

    Process for producing alpha-picoline
    6.
    发明授权
    Process for producing alpha-picoline 失效
    生产α-甲基吡啶的方法

    公开(公告)号:US4395554A

    公开(公告)日:1983-07-26

    申请号:US369296

    申请日:1982-04-16

    摘要: Alpha-picolines are produced by containing aniline or substituted anilines, such as alkyl-, cyclo alkyl-, halo- ; alkoxy- or substituted alkyl-anilines with a crystalline zeolite catalyst having a silica:alumina ratio of at least 12 and a constraint index of 1 to 12. ZSM-5 type catalysts are contacted at elevated temperature to yield alpha-picolines selectively.

    摘要翻译: 通过含有苯胺或取代的苯胺如烷基 - ,环烷基 - ,卤代 - 烷氧基或取代的烷基苯胺与具有至少12的二氧化硅:氧化铝比的结晶沸石催化剂和1至12的约束指数。ZSM-5型催化剂在升高的温度下接触以选择性地产生α-吡啶甲酸。

    Peptide derivatization method to increase fragmentation information from MS/MS spectra
    8.
    发明授权
    Peptide derivatization method to increase fragmentation information from MS/MS spectra 有权
    肽衍生化方法从MS / MS谱增加碎片信息

    公开(公告)号:US07838303B2

    公开(公告)日:2010-11-23

    申请号:US11494383

    申请日:2006-07-27

    IPC分类号: G01N24/00

    摘要: A method of facilitating analysis of a peptide in a mass spectrometer comprising derivatizing the C-terminus of the peptide with an amino acid residue via a reaction with a carbodiimide reagent, yielding a derivative peptide, ionizing the derivative peptide with a double charge, and fragmenting the ionized derivative peptide in a mass spectrometry system, wherein binary fragments of the ionized derivative each include a charge, facilitating sequence analysis of the peptide.

    摘要翻译: 一种促进质谱分析肽的方法,包括通过与碳二亚胺试剂的反应将肽的C末端与氨基酸残基衍生化,产生衍生肽,以双电荷离子化衍生肽,并将其断裂 质谱系统中的离子化衍生肽,其中电离衍生物的二元片段各自包含电荷,便于肽的序列分析。

    Super alloy ionization chamber for reactive samples
    9.
    发明授权
    Super alloy ionization chamber for reactive samples 有权
    超合金电离室用于反应性样品

    公开(公告)号:US06974956B2

    公开(公告)日:2005-12-13

    申请号:US10810396

    申请日:2004-03-25

    CPC分类号: H01J49/10 H01J37/08

    摘要: The present invention relates to an ionization source having a chamber for ionizing a sample. The ionization chamber has surfaces to reduce the overall interaction with reactive samples. The inner surface walls of the ionization chamber or the ionization chamber may be formed from an inert super alloy. For instance, Inconel™ 625, Inconel™ 601 or Hastelloy® may comprise the ionization chamber or the surface walls of the ionization chamber. The invention also includes a method for reducing the interaction of a reactive analyte with an ion source.

    摘要翻译: 本发明涉及一种具有用于离子化样品的室的电离源。 电离室具有减少与反应性样品的整体相互作用的表面。 电离室或电离室的内表面壁可以由惰性超级合金形成。 例如,Inconel TM 625,Inconel TM 601或Hastelloy可以包括电离室或电离室的表面壁。 本发明还包括减少反应性分析物与离子源的相互作用的方法。