保护氨基酸;多肽;Amino Acid Derivatives;Organics;Amino Acids 13C, 2H, 15N;Peptide;Amino Acids & Derivatives;Intermediates & Fine Chemicals;Pharmaceuticals;Vasopressin and Oxytocin receptor;催产素及其衍生物;多肽及蛋白质类;生物化学品;Peptide Receptors;hormones;蛋白质/多肽;中间体;医药原料;peptides for birth-giving use