9-Anthracenecarboxylic acid (9-AC), a polycyclic aromatic carboxylic acid used as a building block for OLED materials, organic semiconductors and fluorescent probes.
p-Toluenesulfonic acid monohydrate (p-TSA·H₂O), a strong, inexpensive and easy-to-handle organic sulfonic acid used as a catalyst in organic synthesis and electronic-grade processes.