D-Iditol is a polyol.1 It inhibits glucosidase I, but not glucosidase II, when used at a concentration of ~1 mM.2
1.Sasahara, H., and Izumori, K.Production of D-iditol from D-sorbose by Rhodotolura rubra RY10 isolated from miso pasteJ. Biosci. Bioeng.87(4)548-550(1999) 2.Muniruzzaman, S., Pan, Y.T., Zeng, Y., et al.Inhibition of glycoprotein processing by L-fructose and L-xyluloseGlycobiology6(8)795-803(1996)