Is 9,10-anthracenedione, N-methyl-1,4-diamino-, product with chloromethyloxirane and 2-aminoethanol vegan?

HC Blue No. 4 is also known as 9,10-anthracenedione, N-methyl-1,4-diamino-, product with chloromethyloxirane and 2-aminoethanol.

HC Blue No. 4 is a synthetic anthraquinone-derived compound used as a direct dye in semi-permanent hair colorants.

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