4-Methylimidazole

β-CGRP, human ,a 37-amino acid peptide,is the beta form of Calcitonin-gene-related peptide (β-CGRP), involved extensively in regulation of the cardiovascular and nervous systems. β-CGRP contains a disulphide bridge at the N-terminus, a C-terminal phenylalanine amide important for immune recognition, and an a-helix between residues 8 and 18.

青霉素 V 钾是一种广谱青霉素抗生素，口服用于治疗敏感革兰氏阳性菌引起的轻度至中度感染。