Table 2. The bioconversion features of substituted pyridine-2-ols for which reactions products were detectable.

Substrate		Product		Conversion %
Name	[M+H]+	[M+H]+	Possible outcome
1-Methylpyridin-2-one	110	126	Hydroxylated at the 5-position	20
1-Ethylpyridin-2(1H)-one	124	140	Hydroxylated at the 5-position	17
1-Propylpyridin-2(1H)-one	138	154	Hydroxylated at the 5-position	Traces of product
3-(Trifluoromethyl) pyridin-2-ol	164	178 [M+H]−	Hydroxylated at the 5-position	46
3-amino-6-methyl-pyridin-2-ol	125	279	Hydroxylation followed by dimerization	88
Pyridine-2,6-diol	112	—	Hydroxylation followed by dimerization (blue pigment)	—