Lh. Yang et al., DETERMINATION OF CODEINE PHOSPHATE AND CODEINE IN THERMAL CHARACTERIZATION BY DIFFERENTIAL SCANNING CALORIMETRY, Journal of thermal analysis, 45(1-2), 1995, pp. 207-210
Thermal behaviour of codeine phosphate and codeine crystallized at the
several solvents system was studied by DSC, and then, the kinetic par
ameters and thermochemical data have been obtained. We have found that
codeine phosphate and codeine exist in a number of polymorphic formes
which may inflicence the bio-availability.