Cell permeable hydrophilic spin trap for both in vivo and in vitro studies. Water soluble analog of PBN (ALX-430-082). Low paramagnetic impurities. No further purification required. Alternative name: alpha-(4-Pyridyl 1-oxide)-N-tert-butylnitrone. Purity: ≥99% (HPLC). Solubility: Soluble in DMSO, water, methanol or 100% ethanol. Long Term Storage: -20°C.