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Differentiation between Protea SuperBlue™ R250 and G250 Coomassie Stains

Protea’s SuperBlue Coomassie Stains are an excellent choice for visualizing proteins separated by SDS-PAGE gel electrophoresis. SuperBlue Coomassie Stains R250 and G250 are two chemical forms of a disulfonated triphenylmethane compound that is commonly used as the basis for detection of proteins in gel electrophoresis. The SuperBlue Coomassie Stain R250 (red-tinted form) lacks two methyl groups that are present in the SuperBlue Coomassie Stain G250 (green-tinted form), which is also called colloidal Coomassie dye.

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