Generic and additional names: para-aminosalicylic acid; PAS CAS name: 4-Amino-2-hydroxybenzoic acid CAS registry #: 65-49-6 Molecular formula: C7H7NO3 Molecular weight: 153.14 Intellectual property rights: Generic, marketed 1946 Brand names: PASER (Jacobus); Rezipas (Bristol-Myers Squibb) ...