Gentian violet was originally used for a mixture of methyl pararosaniline dyes (methyl violet), but is now often considered a synonym for crystal violet. The name refers to its colour, being like that of the petals of a gentian flower; it is not made from gentians or from violets.
G 1257 (OTTO) Gentian violet, GR Cas 548-62-9 - used to colourize diverse products such as fertilizers, antifreezes, detergents, and leather.