Methyl 2-[2-chloro-4-fluoro-5-[(3-oxo-5,6,7,8-tetrahydro-[1,3,4]thiadiazolo[3,4-a]pyridazin-1-yliden

Methyl 2-[2-chloro-4-fluoro-5-[(3-oxo-5,6,7,8-tetrahydro-[1,3,4]thiadiazolo[3,4-a]pyridazin-1-ylidene)amino]phenyl]sulfanylacetate

[[2-Chloro-4-fluoro-5-[(tetrahydro-3-oxo-1H,3H-[1,3,4]thiadiazolo [3,4-a]pyridazin-1-ylidine)amino]phenyl]thioacetic acid methyl ester

Acetic acid, ((2-chloro-4-fluoro-5-((tetrahydro-3-oxo-1H,3H-(1,3,4)thiadiazolo(3,4-A)pyridazin-1-ylidene)amino)phenyl)thio)-, methyl ester