3-methyl-3-vinyl-1-cyclobutanone

3-prop-1-en-2-ylcyclobutan-1-one

2,2-dichloro-3,3,4,4-tetramethylcyclobutan-1-one

7,7-dichloro-6-(N-methylanilino)-2-phenyl-5,6-dihydro-4H-pyrano[3,2-g][1,3]benzothiazol-8-one

7,7-dichloro-2-phenyl-6-(N-phenylanilino)-5,6-dihydro-4H-pyrano[3,2-g][1,3]benzothiazol-8-one