CAS: 636-61-3 EC No: 211-262-2 MDL No: MFCD00004245 RTECS: ON7260000 Powder Molecular Formula: C4H6O5 MW: 134.09 Melting Point: 98-102° Optical Rotation: [α]20/D +28.0±2°, c = 5.5% in pyridine