page_title: Merocyanine
hierarchical_section_title: Merocyanine
caption_attribution_description: chemical structure of merocyanine 540
context_page_description: Merocyanines pertain to the class of polymethine dyes which are clearly defined by a set structural properties. Merycyanines belong to the group of dyes referred to as functional dyes where their applications are not only determined by their colour but also their valuable chemical properties.
  These dyes are usually intensely colored and have large extinction coefficients.
  Merocyanine 540 was the first fluorescent dye used for measuring membrane potential, while Brooker's merocyanine and related compounds are notable for their solvatochromatic properties.
context_section_description: Merocyanines pertain to the class of polymethine dyes which are clearly defined by a set structural properties. Merycyanines belong to the group of dyes referred to as functional dyes where their applications are not only determined by their colour but also their valuable chemical properties. 
  These dyes are usually intensely colored and have large extinction coefficients.
  Merocyanine 540 was the first fluorescent dye used for measuring membrane potential, while Brooker's merocyanine and related compounds are notable for their solvatochromatic properties.
caption: Merocyanine 540 differs from merocyanine I by the replacement of an oxygen atom with a sulfur atom
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