purpurin
/pur-pyoo-rin/US // ˈpɜr pyʊ rɪn //UK // (ˈpɜːpjʊrɪn) //
嘌呤,嘌呤酶,檩条,癜风
Definitions
n.名词 noun
- 1
Chemistry.
- : a reddish, crystalline, anthraquinone dye, C14H5O23, isomeric with flavopurpurin.
Examples
The presence of the same red pigment Bacterio-purpurin seemed justly to indicate the existence of common chemical processes.
These are cochineal, mixed with certain chemicals, hot purpurin sulphuric acid, and the red dye of the banana-eater.
The same operations have also another end--to transform the purpurin into its hydrate, which is brighter and more solid.
The Purpurin, like some of the murices, when mutilated, exude a reddish-purple fluid.
Madder contains two closely allied colouring matters, namely, alizarin and purpurin.
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