4-Aminobenzoic Acid 4-Aminophenyl Ester (APAB, CAS: 20610-77-9): Chemistry, Industrial Production Concepts, and Applications
1. Introduction to APAB 4-Aminobenzoic acid 4-aminophenyl ester—commonly referred to as APAB—is an aromatic amino-functionalized ester valued for its bifunctional reactivity, molecular rigidity, and compatibility with a wide range of polymer and specialty-chemical systems. Its structure features two para-substituted aniline-type amino groups, connected through a benzoate ester linkage, forming a molecule capable of participating in […]