资料来源 : pyDict

红紫素; 红紫素; 紫色素

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Purpurin \Pur"pu*rin\, n. (Chem.)
   A dyestuff resembling alizarin, found in madder root, and
   extracted as an orange or red crystalline substance.