Is Bisbenzimidazo[2,1-b:2',1'-i]benzo[lmn][3,8]phenanthroline-8,17-dione vegan?

Pigment Orange 43 is also known as Bisbenzimidazo[2,1-b:2',1'-i]benzo[lmn][3,8]phenanthroline-8,17-dione.

This is a synthetic vat dye compound, designated CI 71105, used as a colorant in various applications including cosmetics.

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