16652-77-0 257941-01-8 2791-84-6 Dibenzyl L-glutamate p-toluenesulfonate Dibenzyl L-glutamate tosylate EINECS 220-522-4 Glutamic acid, dibenzyl ester, p-toluenesulfonate Glutamic acid, dibenzyl ester, p-toluenesulfonate, L- L-Glutamic acid dibenzyl ester p-toluenesulfonate L-Glutamic acid dibenzyl ester tosylate L-Glutamic acid, bis(phenylmethyl) ester, 4-methylbenzenesulfonate O,O'-Dibenzyl-L-glutamine toluene-p-sulphonate