1 3 5-trimethylbenzene nmr July 8, 2019 16 32 64 128 1 3 5 trimethylbenzene nmr signals 1 3 5 trimethylbenzene h nmr 1 3 5 trimethylbenzene c nmr 13 nmr spectroscopy 1 3 5-trimethylbenzene nist 1 3 5-trimethoxybenzene nmr