. Author manuscript; available in PMC: 2014 Apr 16.

Published in final edited form as: Chembiochem. 2008 Jun 16;9(9):1450–1461. doi: 10.1002/cbic.200700724

Table 1.

Summary of labeling pattern from isotope experiments

	Product Mass	¹⁸O₂	Product Mass	H₂¹⁸O
3,5-d ihydroxybenzaldehyde	m/z 282	Unlabeled ~65%	m/z 284	Labeled ~92%
4-hydroxybenzaldehyde	m/z 196	Labeled ~69%	m/z 194	Unlabeled ~90%