1-Hydroxy-2-naphthoic acid

1-Hydroxy-2-naphthoic acid is a polycyclic aromatic hydrocarbon (PAHs) degradation intermediate, mainly formed during the microbial degradation of aromatic hydrocarbons such as phenanthrene and naphthalene. 1-Hydroxy-2-naphthoic acid can undergo further hydroxylation, resulting in the naphthalene degradation pathway, or direct ring opening, leading to the phthalic acid pathway. 1-Hydroxy-2-naphthoic acid can be eliminated by introducing a heterologous salicylate hydroxylase gene (nahG) into the degrading bacterium[1][2].