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. Author manuscript; available in PMC: 2019 Aug 20.
Published in final edited form as: J Am Chem Soc. 2017 May 12;139(20):6851–6854. doi: 10.1021/jacs.7b03541

Table 2.

Forward and backward reaction rate constants for hydrogen–deuterium exchange of phenethylamine and angio-tensin I calculated for the experimental conditions in 50/50 H2O/D2O.

Reaction rate (s−1)
Compound k1 k−1 k2 k−2 k3 k−3
Phenethylamine 3660±290 2590±210 3330±270 2350±190
Angiotensin I 9540±760 6750±540 6020±480 4250±340 1086±87 768±61