Synonyms: Pyridinium,1-[1-[[(6-chloro-4-hydroxy-2-methyl-1,1-dioxido-2H-thieno[2,3-e]-1,2-thiazin-3-yl)carbonyl]amino]-3-methyl-2-butenyl]-,inner salt (9CI); Pyridinium,1-[1-[[(6-chloro-4-hydroxy-2-methyl-2H-thieno[2,3-e]-1,2-thiazin-3-yl)carbonyl]amino]-3-methyl-2-butenyl]-,inner salt, S,S-dioxide; 2H-Thieno[2,3-e]-1,2-thiazine, pyridinium deriv.