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. Author manuscript; available in PMC: 2012 Mar 15.
Published in final edited form as: J Med Chem. 2010 Jan 28;53(2):624–632. doi: 10.1021/jm9011559

Table 5.

Stability in apical side during permeability study across Caco-2 monolayers (mean ± SEM; n = 3).

Stability* (%)
3-HPG -
Val-3-HPG (5a) 86.5 ± 0.3
Ile-3-HPG (5b) 96.6 ± 0.6
Phe-3-HPG (5c) 3.9 ± 2.0
D-Val-3-HPG (5d) 98.8 ± 0.1
valacyclovir 94.7 ± 0.3
*

percentage of ester form in donor solution at 120 min