Pharma and veterinary chemicals include compounds like Ethoxyquin and Butylated Hydroxytoluene (BHT), essential for preserving pharmaceuticals and animal feed. Ethoxyquin (C19H23NO) is an antioxidant used to prevent spoilage in animal feeds, while BHT (C15H24O) serves a similar purpose in pharmaceuticals and food products. Both inhibit oxidation, extending shelf life and maintaining potency. These chemicals are formulated by dissolving them in solvents or blending them with other stabilizers, ensuring uniform distribution. They find applications in the pharmaceutical industry for drug stabilization and in veterinary medicine to maintain feed quality. Proper usage is crucial to avoid adverse effects, including potential toxicity at high levels.