Published in Nature, this research centers on a process called nucleophilic aromatic substitution (S N Ar), a class of transformation that is widely used across the chemical industries including ...

7, No. 2 (July to December 2013), pp. 274-279 (6 pages) Abstract: Petroleum aromatic hydrocarbons like benzene, toluene, ethyl benzene and xylene, together known as BTEX, has almost the same chemical ...

(Image: Public Domain) Guanine has the chemical formula C₅H₅N₅O and a molecular weight of 151.13 g/mol. It is a polar molecule due to the presence of the carbonyl (C=O) and amino (NH₂) groups. The ...