L-Phenylalanine (63-91-2), L-Leucine (61-90-5), L-Valine (72-18-4), Vitamin A (68-26-8), Vitamin D (67-97-0), l-Cystine (56-89-3), L-Taurine available from J R Carlson Laboratories Inc based in Arlington Heights, IL. Click the links below to visit our website or contact us via our profile page.