L-Xylose [609-06-3]

L-Xylose, a Xylose levo-isomer, is classified as the aldopentose type monosaccharide.(In Vitro):The permeability characteristics of L-xylose have been compared in isolated intact rat diaphragm muscle preparations, in the absence and presence of exogenous insulin. In the absence of added insulin, L-xylose distributed in less than a third of the total cell water. In the presence of added insulin, intracellular distribution of L-xylose is increased. L-Xylose distributed in 50 per cent of the intracellular water. A significant lag period was observed before the insulin effect upon the penetration of L-xylose was evident. The lag period with L-xylose could be abolished by pretreating the tissues with insulin for 1 hour.