The violet glandÂ
The violet gland or supracaudal gland is a gland located on the upper surface of the tail of certain mammals, including European badgers and canids such as foxes, wolves, and the domestic dog,[verification needed] as well as the domestic cat. Like many other mammalian secretion gl
Adrenochrome
Adrenochrome is a chemical compound produced by the oxidation of adrenaline (epinephrine). It was the subject of limited research from the 1950s through to the 1970s as a potential cause of schizophrenia. While it has no current medical application, the related derivative compound, carbaz
Mauveine aka aniline purple
Mauveine, also known as aniline purple and Perkin’s mauve, was one of the first synthetic dyes. It was discovered serendipitously by William Henry Perkin in 1856 while he was attempting to synthesise the phytochemical quinine for the treatment of malaria. It is also among the first
Rose madder aka madder
Rose madder (also known as madder) is a red paint made from the pigment madder lake, a traditional lake pigment extracted from the common madder plant Rubia tinctorum. Madder lake contains two organic red dyes: alizarin and purpurin. As a