CAS 131748-59-9 appears in our catalog under these names: Thiamethoxam Impurity 1, Thiamethoxam Impurity 5, (E)-2-((2-Chlorothiazol-5-yl)methyl)-1-methyl-3-nitroguanidine. Offered by: Chemat Brand, Hubei YoungXin, TRC. Available pack sizes: on request, 10mg, 25mg, 50mg, 100mg, 200mg.