Name: (1R,2R)-(-)-N-p-Tosyl-1,2-diphenylethylenediamine CAS: 144222-34-4 Short form: (1R,2R)-Ts-DPEN Formula: C21H22N2O2S Formula Weight: 366.48 Appearance: White or pale yellow needle crystalline Specification: Chemical purity: ≥97.0% E.e.: ≥99.0% Optical rotation: [α]D20=-33°- -36°(c=1, CHCl3) Usage: One of chiral reagents.