European Pharmacopoeia (EP) Reference Standard Synonym(s): D- threo -2,2-Dichloro-N-(β-hydroxy-α-[hydroxymethyl]-4-[methylsulfonyl]phenethyl)acetamide Amino Acid Sequence: Empirical Formula: C₁₂H₁₅Cl₂NO₅S Formula Weight: 356.22 …