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Barbituric acid-[13c4,15n2]

1-Bromo-3-nitrobenzene-[13c6]

1-Bromo-4-iodobenzene-[13c6]

4-Bromoaniline-[13c6]

3-Bromoaniline-[13c6]

4-Bromobenzaldehyde-[13c6]

3-Bromofluorobenzene-[13c6]

4-Bromophenol-[13c6]

(+/-)-Catechin-[13c3]

4-Chloroaniline-[13c6]