murexide
/ˈmʊrɛksaɪd/Definitions
1. noun
A red or reddish dye, obtained from the shells of the murex snail, used as a reagent in chemical analysis.
“The chemist mixed murexide with the acid to test the purity of the sample.”
2. noun
A compound with the formula (NH2)2C=CHCN, used as a reagent in chemical reactions.
“The researcher used murexide to catalyze the reaction and speed up the process.”