Phenylalanine Know your Amino Acids fact sheet: Full name Phenylalanine 3 letter name Phe 1 letter name F What you see: What a biochemist sees: Speciality – Sources (animal) beef, poultry, pork, fish, milk, yogurt, eggs, cheese Sources (plant) soy products, certain nuts and seeds Chemical formula C9H11NO2 Essential X Non-essential – Hydrophobic X Hydrophilic (neutral) – (positive) – (negative) – Learn more… <- GO BACK