N-[5-(diethylamino)-2-[(3-propyl-1,2,4-thiadiazol-5-yl)diazenyl]phenyl]methanesulfonimidic acid;3-[[difluoromethoxy-(fluoromethyl)-oxo-λ6-sulfanylidene]amino]-N,N-diethyl-4-[(3-methyl-1,2,4-thiadiazol-5-yl)diazenyl]aniline;N-[5-(dimethylamino)-2-[(3-methyl-1,2,4-thiadiazol-5-yl)diazenyl]phenyl]ethanesulfonimidic acid;5-(dipropylamino)-2-[(3-ethyl-1,2,4-thiadiazol-5-yl)diazenyl]benzoic acid;3-(dipropylamino)-6-[(5-methyl-1,3,4-thiadiazol-2-yl)hydrazinylidene]cyclohexa-2,4-dien-1-one