English Pyrazine Czech Pyrazin German Pyrazin URL: https://commons.wikimedia.org/wiki/user:NEUROtiker Wikimedia username: NEUROtiker author name string:
English Synthesis of 3,4-Dicyanopyrazine from DAMN German Pyrazin aus DAMN URL: https://commons.wikimedia.org/wiki/user:ChemDoc_2010 author name string:
English German allgemeine chemische Struktur Pyrazin Wikimedia username: NadirSH URL: https://commons.wikimedia.org/wiki/user:NadirSH author name string: