The present disclosure relates to tosylate salts 1-{[4-(methoxymethyl)-4-({[(1R,2S)-2-phenylcyclopropyl]amino}methyl)piperi din-l-yl]methyl}cyclobutanecarboxylic acid, methods of preparation thereof, and intermediates in the preparation thereof, which are useful in the treatment of the LSD1-associated or mediated diseases such as cancer.本發明係關於1-{[4-(甲氧基甲基)-4-({[(1R,2S)-2-苯基環丙基]胺基}甲基)哌啶-1-基]甲基}環丁烷甲酸甲苯磺酸鹽、其製備方法及其製備中之中間物,該等鹽適用於治療LSD1相關或介導之疾病,諸如癌症。