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@ARTICLE{Gnther:49810,
      author       = {Günther, K. and Kleist, E. and Thiele, B.},
      title        = {{E}strogen-active nonylphenols from an isomer-specific
                      viewpoint: a systematic numbering system and future trends},
      journal      = {Analytical and bioanalytical chemistry},
      volume       = {384},
      issn         = {1618-2642},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {PreJuSER-49810},
      pages        = {542 - 546},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {4-Nonylphenols (NPs) are very important environmentally
                      relevant substances. They are persistent, toxic,
                      endocrine-disrupting chemicals that are priority hazardous
                      substances of the EU Water Framework Directive. NPs are
                      degradation products of 4-nonylphenol ethoxylates (NPEs), a
                      widely used group of nonionic surfactants. The technical
                      synthesis of NP leads to a complex mixture of NPs consisting
                      of isomeric compounds that have different branched nonyl
                      side chains. It has recently become clear that an
                      isomer-specific view is absolutely necessary when it comes
                      to correctly evaluating the biological effects of NPs and
                      their behavior in the environment, including degradation
                      processes. To rationalize the identification of individual
                      NP isomers in scientific studies, we have developed a
                      numbering system for all possible NP isomers that follows
                      the IUPAC rules of substituent characterization in
                      alkylphenols. The 211 possible constitutional isomers of NP
                      are numbered according to a hierarchical and logical system.
                      In the future, multidimensional coupling systems--for
                      example GCxGC-TOF-MS--will be needed to study these highly
                      complex class of substances.},
      keywords     = {Chemistry, Organic: methods / Chemistry, Organic: trends /
                      Estrogens: chemistry / Isomerism / Molecular Structure /
                      Phenols: chemistry / Terminology as Topic / Estrogens (NLM
                      Chemicals) / Phenols (NLM Chemicals) / J (WoSType)},
      cin          = {ICG-III},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB49},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Biochemical Research Methods / Chemistry, Analytical},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:16341851},
      UT           = {WOS:000234299600027},
      doi          = {10.1007/s00216-005-0181-8},
      url          = {https://juser.fz-juelich.de/record/49810},
}