Formula: C₁₀H₁₆N₂O₃S CAS: 58-85-5 EC No.: 200-399-3 M (Molar Mass): 244.31 g/mol D (Density): 1.27 g/cm³ (approx.) mp (Melting Point): 232-233°C (decomposes) bp (Boiling Point): Not applicable Optical Rotation: [α]²⁰D +89° to +93° (c=1 in 0.1N NaOH)

Assay (HPLC): ≥ 97.0 % Appearance: White to off-white crystalline powder. Identification (IR Spectrum, Optical Rotation): Passes test. Specific Rotation: [α]²⁰/D = +89° to +93° (c=1, 0.1N NaOH) Solubility: Slightly soluble in water; soluble in dilute alkali. Loss on Drying (at 105°C): ≤ 0.5 % Residue on Ignition: ≤ 0.1 % Biological Activity: Supports growth of biotin-requiring microorganisms.