CAS 6288-99-9 appears in our catalog under these names: 6-Chloro-1-phenyl-1h,4h,5h-pyrazolo[3,4-d]pyrimidin-4-one, 95%, 6-Chloro-1-phenyl-1H-pyrazolo(3,4-d)pyrimidin-4(5H)-one, 97%, 6-Chloro-1-phenyl-1H,4H,5H-pyrazolo(3,4-d)pyrimidin-4-one. Offered by: Combi-blocks, AmBeed, Biosynth. Available pack sizes: 5g, 1g, 250mg, 10g, 100mg.