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triclosan

n. A potent wide-spectrum antibacterial and antifungal agent, molecular formula C12H7Cl3O2.

Wikipedia
Triclosan

Triclosan, similar in its uses and mechanism of action to triclocarban, is an antibacterial and antifungal agent found in consumer products, including toothpaste, soaps, detergents, toys, and surgical cleaning treatments. Its efficacy as an antimicrobial agent, the risk of bacterial resistance, and its possible role in disrupted hormonal development remain controversial. Additional research seeks to understand its potential effects on organisms and environmental health.