File:NP-Benzidin-Umlagerung.png
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![File:NP-Benzidin-Umlagerung.png](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e9/NP-Benzidin-Umlagerung.png/800px-NP-Benzidin-Umlagerung.png?20081025070244)
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Original file (1,432 × 727 pixels, file size: 37 KB, MIME type: image/png)