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Substance Name: Methyl purple
RN: 1340-02-9


  • Redox dye, sensitive monitor of photosystem I activity in chloroplasts.
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Names and Synonyms

Name of Substance

  • Methyl purple


  • 8-Hydroxy-11-methyldibenz(b,e)(1,4)oxazepin-2(11H)one

Systematic Name

  • Methyl purple

Registry Numbers

CAS Registry Number

  • 1340-02-9

System Generated Number

  • 0001340029