Trichotomine is a bright blue

pigment A pigment is a powder used to add or alter color or change visual appearance. Pigments are completely or nearly solubility, insoluble and reactivity (chemistry), chemically unreactive in water or another medium; in contrast, dyes are colored sub ...

found in the berries of the plant ''

Clerodendrum trichotomum ''Clerodendrum trichotomum'', the harlequin glorybower, glorytree or peanut butter tree, is a species of flowering plant in the family (biology), family Lamiaceae. It is native plant, native to China, Korea, Taiwan, Japan, India, and the Philippi ...

'', which is native to China and Japan. It has a novel

chromophore A chromophore is the part of a molecule responsible for its color. The word is derived . The color that is seen by our eyes is that of the light not Absorption (electromagnetic radiation), absorbed by the reflecting object within a certain wavele ...

structure which differs from previously studied plant pigments.Iwadare S, Shizuri Y, Yamada K, Hirata Y. Synthesis of trichotomine, a blue pigment obtained from clerodendron trichotomum thunb. ''Tetrahedron''. 1978; 34(10):1457-1459. {{doi, 10.1016/0040-4020(78)80166-5

References

Biological pigments Indolizinoindoles Dicarboxylic acids