An organic alkyl radical such as methyl, ethyl, propyl, butyl, pentyl etc. 'R' is used when the reaction in which the substance is used is a generic reaction that would be the same whatever the radical.
Vinegar= HC2H3O2 Urea= R-N-C(O)-N-R
R-CO-NH2 is the general formula of amides.
CuSO4 is the chemical formula of copper(II) sulfate.
Ba(OH)2is the chemical formula of barium hydroxide.
C u B r O 3
MgCl2.6H2O is the chemical formula of magnesium chloride hexahydrate.
Formula: R-OH
Propionate
Ketchup
magnesium bromide
Vinegar= HC2H3O2 Urea= R-N-C(O)-N-R
The chemical formula for the carboxyl ion is -COO−.
The chemical formula for calcium hydrogen phosphate is CaHPO4.
R-CO-NH2 is the general formula of amides.
OR / R-c - H / OR this is the general formula for an acetal in R-group notation
NaCl is the chemical formula of sodium chloride.
Naproxen Sodium a pain reliever.