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Medical Definition of Benzopurpurin 4B
1. A red acid dye, C34H26N6O6S2Na2, formerly used as a plasma stain and as an indicator (changes from violet to red in the pH range 1.2 to 4.0). (05 Mar 2000)
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1. A red acid dye, C34H26N6O6S2Na2, formerly used as a plasma stain and as an indicator (changes from violet to red in the pH range 1.2 to 4.0). (05 Mar 2000)