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Phenylalanine has been around as long as life itself, if not longer. It's not something that someone invented one day. It's like oxygen: no one invented it, it's been here as long as anyone can remember, and far longer! J. Heinrich Matthaei and Marshall W. Nirenberg figured out a way to make a bacterium produce long chains of phenylalanine molecules in 1961.
Phenylalanine (US: /ËfÉnÉlËÃ¦lÉniËn/, UK: /ËfiËnaÉªlËÃ¦lÉniËn/; abbreviated as Phe or F) is an Î±-amino acid with the formula C. 9H. 11NO. 2. It can be viewed as a benzyl group substituted for the methyl group of alanine, or a phenyl group in place of a terminal hydrogen of alanine. This essential amino acid is classified as neutral, and nonpolar because of the inert and hydrophobic nature of the benzyl side chain.