Terbuthylazine (Standard) is the standard substance of Terbuthylazine, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Terbuthylazine is a triazine herbicide and a selective acetolactate synthase (ALS) inhibitor, toxic to aquatic organisms, and capable of disrupting gut microbiota. Terbuthylazine induces significant damage to the jejunal barrier and mitochondrial quality control imbalance.