Mutarotation H 令 CH2OH CH,OH H CH2OH HO 0 HO- HO H H HO H H HO H HO H OH OH OH OH H OH H H H H d anomer open-chain form B anomer crystallize below 98C equilibrium in solution crystallize above 98C H H CH2OH CH2OH HO -0 HO -0 H20 H >equilibrium mixture of a and B H20 HO H [0=+52.6° HO OH OH OH H OH H H pure d anomer mp146C,[a=+112.2° Glucose also called pure B anomer mp150C,[a]=+18.7° dextrose;dextrorotatory. => Chapter 23 12Chapter 23 12 Mutarotation => Glucose also called dextrose; dextrorotatory