HDAC inhibitor. Weak histone deacetylase (HDAC) inhibitor. Induces differentiation, growth arrest and apoptosis in a number of cell lines. Protects against cerebral ischemic injury and displays neuroprotective effect in a mouse model of Huntington’s disease. Anti-neoplastic agent and transcriptional regulator. Also acts as an inducer of tumor cytostasis and differentiation. Shows chemical chaperone activity. Alternative Name: Sodium 4-phenylbutyrate, 4-Phenylbutyric acid sodium salt, SBP, 4PBA, PBNa. Formula: C10H11O2. Na. MW: 186.2. CAS Number: 1716-12-7. Purity: ≥98% (UHPLC). Appearance: White to yellowish solid. Solubility: Soluble in DMSO or water (25mg/ml). Use/Stability: Stable for at least 1 year after receipt when stored at +20°C. Stock solutions are stable for up to 3 months at -20°C. Long Term Storage: Ambient