Atenolol belongs to a class of drugs known as beta blockers. It works by blocking the action of certain natural chemicals in your body, such as epinephrine, on the heart and blood vessels. This effect lowers the heart rate, blood pressure, and strain on the heart.
Brompheniramine (Bromfed, Dimetapp, Bromfenex, Dimetane, BPN, Lodrane), commonly marketed as its salt brompheniramine maleate, is an antihistamine drug of the propylamine (alkylamine) class.rompheniramine, 3-(p-bromophenyl)-3-(2-pyridyl)propyldimethylamine, is an analog of chlorpheniramine. The only difference is that the chlorine atom in the benzene ring is replaced with a bromine atom. It is also synthesized in an analogous manner.
Pentane (C5H12) has three structural isomers. Isomer 1 is n-pentane, the straight chain normal structure for pentane. Isomer 2 is 2-methylbutane, a branched chain with a carbon* atom joined onto three other carbon atoms.Isomer 3 is 2,2-dimethylpropane, a branched chain with the central carbon* atom joined onto four other carbon atoms.Note that for all the isomers, each carbon atom has four bonds (valency 4), and each hydrogen atom has one bond (valency 1).Valency is the combining power of an atom.somer 3 is 2,2-dimethylpropane, a branched chain with the central carbon* atom joined onto four other carbon atoms. Note that for all the isomers, each carbon atom has four bonds (valency 4), and each hydrogen atom has one bond (valency 1). Valency is the combining power of an atom.