Benchmark thermodynamic properties of methylanisoles: Experimental and theoretical study

•Thermochemistry of 2-, 3-, and 4-methylanisoles was studied.•Liquid state enthalpies of formation were measured by calorimetry.•Vaporisation enthalpies were derived from by transpiration method.•Ab initio enthalpies of formation are in excellent agreement with experiment.•A new paradigm for obtaining thermochemistry of liquid compounds was suggested.