O ácido 1,2,3,4-tetrahidro-1-naftoico (CAS 1914-65-4) é uma impureza de ácido carboxílico aromático bicíclico associada a rotas sintéticas derivadas de tetralina e à oxidação benzílica. Com fórmula molecular C11H12O2 e massa molar de 176.21 g/mol, representa a saturação parcial do núcleo naftalênico e pode surgir como subproduto de प्रक्रिया ou por transformação oxidativa de intermediários correlatos. A semelhança estrutural com outros ácidos de anéis fundidos dificulta a resolução cromatográfica, tornando LC-MS/MS, HPLC com detecção por UV e, em alguns casos, GC-MS após derivatização as técnicas mais empregadas para identificação e quantificação em nível de traço.
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