(2S)-(-)-2-{[[[3,5-BIS(TIFLUOROMETHYL)PHENYL]AMINO]THIOXOMETHYL]AMINO}-N-(DIPHENYLMETHYL)-N,3,3-TRIMETHYLBUTANAMIDE, 95% is a chiral thiourea catalyst that has emerged as an efficient class of organocatalysts due to their unique dual hydrogen-bonding capacity.