CAS 150-13-0 appears in our catalog under these names: Tetracaine EP Impurity A (4-Aminobenzoic Acid), 4-Aminobenzoic Acid, >95% (HPLC), 4-Aminobenzoic Acid, 4-aminobenzoic acid/ 99.97% (existing batch purity), 4-Aminobenzoic acid/ 99%. Offered by: Chemat Brand, TRC, Mikromol, LoGiCal, Dr. Ehrenstorfer. Available pack sizes: on request, 100g, 1g, 5g, 100mg, 10mg, 500mg, 500g.