Purity Limit: ≥ 97% (Assay by Titration) CAS No.: 20485-41-0 Molecular Formula: C5H5NO2S Molecular Weight: 143.17 MDL No.: MFCD00626872 Appearance: White to off-white crystalline powder Melting Point: 250-287 °C Storage Temperature: Store at 0-8 °C