1,1,3-Trioxo-2H,4H-thieno[3,4-e][1,2,4]thiadiazine der. 214916-52-6 4-Ethyl-6-methyl-2-benzylpyrazolo[4,3-e]1,2,4-thiadiazaperhydroine-1,1,3-trione AIDS-072172 AIDS072172 Pyrazolo[4,3-e]-1,2,4-thiadiazin-3(2H)-one, 4-ethyl-4,6-dihydro-6-methyl-2-(phenylmethyl)-, 1,1-dioxide