"9H-Pyrido[3,4-b]indole" . . "beta-carbolines" . . "\u03B2\u2010carboline" . . . . "Beta-Carboline" . . "Beta-Carboline" . . "beta-Carboline" . "beta-carboline" . . "\u03B2-carbolines" . . . . . . "\u03B2-carboline" . . . . . . . . "\u03B2-Carboline" . "''beta''-carboline" . . . . . . . . .