Normal extinction of species that occurs as a result of changes in local environmental conditions.
Verapamil Uses: An Overview. 1  High blood pressure (hypertension). 2  Chest pain (angina), including: 3  Vasospastic angina (Prinzmetal's angina or variant angina). 4  Unstable angina. 5  Chronic stable angina (exertional angina). 6  Certain irregular heart rhythms (arrhythmias), including: 7  Chronic atrial flutter.
The structural formula of verapamil HCl is: C27H38N2O4 â¢ HCl M.W. = 491.08. Benzeneacetonitrile, Î±-[3-[[2-(3,4-dimethoxyphenyl)ethyl] methylamino]propyl]-3,4dimethoxy-Î±-(1-methylethyl) hydrochloride. Verapamil HCl is an almost white, crystalline powder, practically free of odor, with a bitter taste.