Primulin is an

anthocyanin Anthocyanins (), also called anthocyans, are solubility, water-soluble vacuole, vacuolar pigments that, depending on their pH, may appear red, purple, blue, or black. In 1835, the German pharmacist Ludwig Clamor Marquart named a chemical compou ...

. It is the 3-

galactoside A galactoside is a glycoside containing galactose. The H of the OH group on carbon-1 of galactose is replaced by an organic moiety. Depending on whether the glycosidic bond lies "above" or "below" the plane of the galactose molecule, galactosides ...

malvidin Malvidin is an O-methylated anthocyanidin, the 3',5'-methoxy derivative of delphinidin. As a primary plant pigment, its glycosides are highly abundant in nature. Natural occurrences Malvidin is responsible for the blue color found in petals ...

. It can be found in ''

Primula sinensis ''Primula sinensis'', () or the Chinese primrose, is a plant species in the genus ''Primula ''Primula'' () is a genus of herbaceous plant, herbaceous flowering plants in the family (biology), family Primulaceae. They include the primrose (''P ...

''. The first crystalline form of this pigment was prepared by Rose Scott-Moncrieff in about 1930. This was the first crystalline anthocyanin pigment ever identified. This was possible because of her insight into linking genetics with chemistry.Rose Scott-Moncrieff and the dawn of (Bio) Chemical Genetics
Cathie Martin, April 2016, Biochemical classics, Biochemist.org, Retrieved 5 July 2016

References

O-methylated anthocyanins Flavonoid galactosides {{Aromatic-stub