CAS 15540-81-5: Benzene, 1-bromo-2,5-dimethyl-4-nitro-

The methyl group is a chemical moiety with the formula -CH3. It consists of a carbon atom attached to three hydrogen atoms. In organic chemistry, the term "methyl" refers to a substituent that is typically bound to an electronegative element such as oxygen or sulfur. In this case, the methyl group is bonded to one nitrogen and two hydrogens. The deshielding effect of the methyl group can be seen in the coupling constant between protons in the 1H NMR spectrum and also in its nmr spectra. The proton nmr spectrum displays peaks at different frequencies depending on whether the protons are singlets or doublets, indicating that these protons are coupled together by an exchange reaction. The proton nmr spectrum also displays constants for each peak, which are used to identify different types of protons and their corresponding magnetic environments.

1-Bromo-2,5-dimethyl-4-nitrobenzene