Table 1
GC-MS retention times (t
R
) of the PFB or di-PFB derivatives of the amino acid conjugates of VPA
PFB or di-PFB
*
derivatives of:
GC-MS (
t
R
= min)
VPA GLN
15.30
VPA GLU
*
16.58
VPA GLY
8.99
VPA ASP
*
15.71
FVPA GLN
14.77