TABLE 1

In vivo brain uptake of the compounds expressed in influx rate constant (Kin)

CompoundsBrain Kin (ml/s per gram)
ExperimentalTheoreticala
Glucose9.5 × 10−3
Morphine2.2 × 10−4
An2-morphine2.7 × 10−3
M6G2 × 10−5
An2-M6G8.8 × 10−3

  • ↵a The M6G and glucose values used are from Wu et al. (1997).