153504-81-5 2,3-Quinoxalinedione, 6,7-dichloro-1,4-dihydro-5-nitro- 5-Nitro-6,7-dichloro-2,3-quinoxalinedione 6,7-Dichloro-1,4-dihydro-5-nitro-2,3-quinoxalinedione 6,7-Dichloro-5-nitro-2,3-quinoxalinedione ACEA 1021 Licostinel Licostinel [USAN]