Isoproterenol (Norisodrine) is a non-selective and orally active β-adrenoceptor agonist.Isoproterenol is a potent peripheral vasodilator and bronchodilator.

cis-4-Hydroxy-L-proline is an inhibitor of the synthesis and extracellular deposition of collagen. cis-4-Hydroxy-L-proline could inhibit fibroblast growth by preventing the deposition of triple-helical collagen on the cell layer.

2-(1-methyl-1H-imidazol-4-yl)acetic acid (2-(1-methylimidazol-4-yl)acetic acid) is a plasma histamine derivative that is a biomarker for identifying lymphangioleiomyomatosis.