CAS 583-50-6 appears in our catalog under these names: (2R,3R)-2,3,4-Trihydroxybutanal, 75% 50% in water, 75% 50% in water, D-Erythrose 75% 50% in water, D-Erythrose (50% in water), 99.73%, D-Erythrose (w/v = 10 mg/ml), D-Erythrose. Offered by: Chemat, Ambeed, MedChemExpress, TRC, TargetMol. Available pack sizes: 100mg, 250mg, 1g, 100 mg, 250 mg, 10ml, 1ml, 2,5ml.