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. 2018 Jul 11;8(3):28. doi: 10.3390/life8030028

Table 1.

Compound specific stable isotope composition (‰) of individual pyridine carboxylic acids in Murchison and Murray [44,45].

Murchison Murray
δD δ13C δD δ13C
Nicotinic acid +129 ± 1 +20.3 ± 1.7 - -
Nicotinic methyl homologue - +20.3 ± 1.2 +621 ± 43 -