Pamoic acid, also called embonic acid, is a naphthoic acid derivative, used as a counter ion of a drug compound to increase the solubility of the drug in water. Pamoic acid has agonist activity for the orphan G protein-coupled receptor GPR35 by which it activates ERK and beta-arrestin2, and causes antinociceptive activity. Although (like other drug salts) it has been considered an inactive compound by the FDA.

3,4,5-Trimethoxybenzoic acid was used as internal standard during the determination of the various types of hydroxyl groups present in lignins. 3,4,5-Trimethoxybenzoic Acid is a metabolite of trimebutine. It is widely used in making dyes and inks, photographic developers and used as astringents in medically.

Methyl 3,4,5-trimethoxybenzoate is a derivative of gallic acid.

Aniline is a toxic organic compound consisting of a phenyl group attached to an amino group. It is the prototypical aromatic amine. Aniline and its derivatives are very important for the synthesis of chemical products such as dyes, resins, and medicines. The main use of aniline is in the manufacture of precursors to polyurethane. Aniline is a carcinogen that is considered to induce tumors secondary to hemosiderosis as a consequence of methemoglobinemia. Aniline is classified as Group 3, not classifiable as to its carcinogenicity in humans (IARC, 480 1987b). Aniline occurs naturally in some foods (i.e., corn, grains, beans, and tea), but the larger source of exposure is in industrial settings. Lifetime permissible daily exposure (PDE) for aniline is 720 ug/day. Simple anilines such as aniline and monosubstituted anilines are known to disappear from the environment mainly via biodegradation.