Aroxa™ 3-methyl-2-butene-1-thiol (Cara Technologies)

“Lightstruck, like a skunk or freshly-brewed coffee”

Certified beer flavor standard used to train professional beer tasters to recognize and scale the intensity of lightstruck character. 3-Methyl-2-butene-1-thiol is an off-flavor formed in beer when it is exposed to light.