SEARCH Articles Figures Tables 1 //-Pyrazino thiadiazine 2- -1,2,3,6,7,116-hexahydro 4//-pyrazino isoquinoline 2- Amino-5//-pyrazino pyrido 2//-Pyrazino indoles Hexahydro-1 H-pyrazino Pyrazino benzimidazol Pyrazino cinnoline Pyrazino diazepines Pyrazino indole Pyrazino indole, 1,2,3,4-tetrahydrosynthesis Pyrazino indole, 1,2,3,4-tetrahydrosynthesis via Ritter reaction, palladium Pyrazino indole-1,4-diones Pyrazino isoquinolines Pyrazino oxazin-4-ones Pyrazino oxazines Pyrazino pyrazine Pyrazino pyrazines Pyrazino pyrazines, covalent Pyrazino pyrazines, covalent hydration Pyrazino pyrazines, reduction Pyrazino pyridazine, 5,8-dichloro Pyrazino pyridazine, reactivity Pyrazino pyridazine-5,8-diamine Pyrazino pyridazine-5,8-dione Pyrazino pyridines Pyrazino pyrimidine Pyrazino pyrimidine-3-carboxylates Pyrazino quinazoline-3,6-dione Pyrazino quinazoline-3,6-diones Pyrazino quinazolines Pyrazino quinoline, hexahydrosynthesis Pyrazino quinoxahnes, from Pyrazino quinoxahnes, from quinoxalinamines Pyrazino quinoxaline Pyrazino quinoxalines Pyrazino quinoxalines, from Pyrazino thiadiazine 2,2-dioxides Pyrazino thiadiazines Pyrazino thiazines Pyrazino- TTF Pyrazino-bis -TSF Pyrazino-bis -TTF Pyrazino-vinyl bridging reactions Pyrazinoic acid To pyrazino-oxazine To pyrazino-oxazines