CAS 233277-99-1 appears in our catalog under these names: 4-Methyl-N-[(1S)-2-oxo-2-[[(1S)-1-(2-phenylethyl)-3-(phenylsulfonyl)-2-propen-1-yl]amino]-1-(phenylmethyl)ethyl]-1-piperazinecarboxamide, 99%, 99%, K777, K777/ 99.71% (existing batch purity), K-177, K777 [K11777]. Offered by: Chemat, GLPBio, TargetMol, Biosynth, Ambeed. Available pack sizes: 1mg, 5mg, 25mg, 10mg, 50mg, 100mg, 10mM (in 1ml dmso), 250mg.