Also available in 1 mL, 1 mg, 5 mg, 25 mg, 50 mg, 100 mg and bulk. Please contact Fisher for quotes. 1. Atractyloside potassium salt (Atractyloside Dipotassium Salt) inhibits oxidative phosphorylation by blocking the transfer of adenosine nucleotides through the mitochondrial membrane. Purity 99.82%