Name: Di-p-toluoyl-D-tartaric acid monohydrate CAS: 71607-32-4 Short form: D-(+)-DTTA.H2O Formula: C20H20O9 Formula Weight: 404.33 Appearance: White or off-white crystalline powder Uses: used in chiral separation racemization amine-group compound. Specification: Chemical purity: ≥99.0% Optical rotation: [α]D20=+140°-+146°(C=1.0, MeOH)