Pharmaceutical IntermediateChina 5-Methyl-1, 3, 4-Oxadiazole-2-Carboxylic Acid Potassium Salt CAS 888504-28-7, Find details about China Oxadiazole Potassim Salt, 29122-68-7 from 5-Methyl-1, 3, 4-Oxadiazole-2-Carboxylic Acid Potassium Salt CAS 888504-28-7