4-11-00-00248 (Beilstein Handbook Reference) 80-40-0 AI3-08004 BRN 0611213 Benzenesulfonic acid, 4-methyl-, ethyl ester CCRIS 1028 EINECS 201-276-7 ETHYL P-METHYLBENZENESULFONATE Ethyl PTS Ethyl p-TS Ethyl p-methyl benzenesulfonate Ethyl p-toluenesulfonate Ethyl p-tosylate Ethyl toluene-4-sulphonate Ethyl tosylate Ethyl-p-toluenesulfonate Ethylester kyseliny p-toluensulfonove [Czech] HSDB 5235 NSC 8887 p-Toluenesulfonic acid, ethyl ester p-Toluolsulfonsaeure aethyl ester [German]