purpurin
noun
pur·pu·rin
ˈpər-pyə-rən 
1
: an orange or red crystalline compound C14H8O5 obtained from madder root along with alizarin or by oxidation of alizarin and used in dyeing
2
also purpurine
: any of various colored compounds obtained from chlorophyll or related compounds by the action of cold alcoholic alkali and oxygen
Cite this Entry
“Purpurin.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/purpurin. Accessed 4 Nov. 2025.
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