CAS 28381-57-9 appears in our catalog under these names: methyl (2S)-2-formamido-4-(methylsulfanyl)butanoate, 95%, Methyl (2S)-2-formamido-4-(methylsulfanyl)butanoate. Offered by: Combi-blocks, AmBeed, Biosynth. Available pack sizes: 5g, 1g, 50mg, 0,5g.