Tulobuterol-D9 hydrochloride (C-78-D9) 是 Tulobuterol 的氘代物。Tulobuterol (C-78 free base) 是一种长效的 β2 肾上腺素受体 (β2-adrenoceptor) 激动剂，可减少慢性阻塞性肺疾病和支气管哮喘的发作频率。Tulobuterol 也是一种拟交感神经药，用作透皮贴剂，可增加正常的横膈膜肌肉力量。
Tulobuterol-D9 hydrochloride (C-78-D9) is the deuterium labeled Tulobuterol. Tulobuterol (C-78 free base) is a long-acting β2-adrenoceptor agonist, which reduces the frequency of exacerbations of chronic obstructive pulmonary disease and bronchial asthma. Tulobuterol is also a sympathomimetic agent used as a transdermal patch, and increases normal diaphragm muscle strength[1].
Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs[1].
[1]. Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019;53(2):211-216. [2]. Yamaya M, et al. Tulobuterol inhibits rhinovirus infection in primary cultures of human tracheal epithelial cells. Physiol Rep. 2013 Aug;1(3):e00041.;Shindoh C, et al. Tulobuterol patch maintains diaphragm muscle contractility for over twenty-four hours in a mouse model of sepsis. Tohoku J Exp Med. 2009 Aug;218(4):271-8.
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