A worn murex shell lay half-buried in the sand, its spines catching the sunlight.

Local biologists catalogued the murexes collected along the rocky shore to monitor population changes.

On our walk along the rocky shore, I found a spiny murex clinging to a tidal pool, its ornate shell hinting at a fierce predatory life.

Archaeologists discovered textile fragments dyed with Tyrian purple alongside shells of the purple dye murex.

In the old laboratory notes, the chemist described murexan as a stubborn, poorly understood product formed from several ureids.

The chemist carefully labeled the vials containing murexides before sending them for analysis.

In the titration, we used murexide as a complexometric indicator to detect trace amounts of calcium.

The chemist synthesized a new derivative called murexane and cataloged its properties.

During the analysis, the chemist isolated murexoin, a scarlet crystalline substance, and noted its relation to murexide.