Sulbutiamine (isobutyryl thiamine disulfide) is a lipophilic derivative of thiamine used for the treatment of asthenia and other related pathological conditions. Sulbutiamine is available over-the-counter in several countries as a component of nutritional supplements.Form:White SolidMelting Point:138-140°C (dec.)Solubility:Chloroform, DMSO, Methanol