4-14-00-01981 (Beilstein Handbook Reference) 4-Aminosalicylic acid p-tolyl ester 56356-15-1 BRN 2855293 Benzoic acid, 4-amino-2-hydroxy-, 4-methylphenyl ester Salicylic acid, 4-amino-, p-tolyl ester p-Tolyl pas p-Tolyl-4-aminosalicylate