Is 2-(2-((2,4-dimethoxyphenyl)amino)vinyl)-1,3,3-trimethyl-3H-indolium chloride (CI 48055) vegan?

Basic Yellow 11 is also known as 2-(2-((2,4-dimethoxyphenyl)amino)vinyl)-1,3,3-trimethyl-3H-indolium chloride (CI 48055).

Basic Yellow 11 is a synthetic methine cationic dye used as a colorant in hair dye formulations.

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