CAS 18333-73-8 appears in our catalog under these names: 4-Methoxy-7-nitrobenzo[c][1,2,5]oxadiazole, >95.0%(HPLC)(qNMR), 4-Methoxy-7-nitro-2,1,3-benzoxadiazole, 4-Methoxy-7-nitro-2,1,3-benzoxadiazole, 95.0%, 95.0%. Offered by: TCI, Chemat. Available pack sizes: 100mg, 1g, 250mg.