Cloprostenol is a synthetic prostaglandin analogue structurally related to Prostaglandin F2α (PGF2α), for use in cattle and horses. As a potent luteolytic agent it causes functional and morphological regression of the corpus luteum (luteolysis) in cattle and horses followed by return to oestrus and normal ovulation.

Oxibendazole is an anthelmintics drug which is used to protect against roundworms, strongyles, threadworms, pinworms and lungworm infestations in horses and other domestic pets. Oxibendazole causes degenerative alterations in the tegument and intestinal cells of the worm by binding to the colchicine-sensitive site of tubulin, thus inhibiting its polymerization or assembly into microtubules.

Phenolsulfonphthalein (Phenol red) is a pH indicator frequently used in cell biology laboratories. In medicine phenolsulfonphthalein is used as a test to help diagnose problems or disease of the kidneys. This test determines how well the kidneys are working. The test is based on the fact that phenol red is excreted almost entirely in the urine. Phenol red solution is administered intravenously, the urine produced is collected. By measuring the amount of phenol red excreted colorimetrically, kidney function can be determined. Phenolsulfonphthalein has being shown to be a mild estrogenic stimulus. Phenolsulfonphthalein as Phenol red thread test is used to diagnose dry eyes syndrome.

Benzododecinium, a quaternary ammonium compound, is an antiseptic agent and disinfectant. Benzododecinium is used as preservative in different pharmaceutical formulations. Thus, the dispenser of Timoptol-LA, used for the treatment of patients with ocular hypertension, contains benzododecinium bromide as a preservative. It is used as preservative and the corneal permeability enhancer in formulation. Benzododecinium is effective against gram-positive microbes.

Fenbendazole (FBZ) is a broad-spectrum benzimidazole antiparasitic drug currently approved for use in numerous animal species, including rodents. Although nematodes, and in particular pinworms, are the main endoparasites of concern in laboratory rodents, FBZ also is indicated for use in other animal species against a wide spectrum of nematodes, tapeworms, flukes, and protozoa (Giardia duodenalis, Encephalitozoon intestinalis). The molecular mode of fenbendazole action consists in
binding of beta-tubulin monomer prior to dimerisation with alfa-tubulin which blocks subsequent microtubule formation. These microtubules are important organelles involved in the motility, the division and the secretion processes of cells in all living organisms. In the worms the blocking of microtubules perturbs the uptake of glucose, which eventually empties the glycogen reserves. This blocks the whole energy management mechanism of the worms that are paralyzed and die or are expelled. FBZ have a greater binding to nematode as compared to mammalian tubulin at 37°C. The oral LD50 of p-OH fenbendazole was >10 000 mg/kg b.w. in mice and rats.

Atipamezole is a synthetic α2-adrenergic antagonist. It competitively inhibits α2-adrenergic receptors. Atipamezole is indicated for the reversal of the sedative and analgesic effects of Dexdomitor and Domitor in dogs. Adverse reactions: occasional vomiting may occur. At times, a period of excitement or apprehensiveness may be seen in dogs treated with atipamezole. Other effects of atipamezole include hypersalivation, diarrhea, and tremors.

Dinitolmide (also known as zoalene) is a nitrobenzamide coccidiostat developed by Dow Company. The drug is approved by FDA for the prevention and control of coccidiosis in chickens and turkeys. Dinitolmide is hazardous for man as it may cause mutations. Thus the substance should be handle with extreme caution.

Ethylparaben is produced naturally and found in several fruits and insects, where it acts as an antimicrobial agent. Ethylparaben is mainly used as antiseptics in cosmetics, food and medicine (E number E214). It is also can be used as feed preservatives and antiseptic for bacteria. Ethylparaben is readily absorbed from the gastrointestinal tract or through the skin. It is hydrolyzed to p-hydroxybenzoic acid and rapidly excreted in urine without accumulating in the body. Under the Federal Food, Drug, and Cosmetic Act (FD&C Act), cosmetic products and ingredients, other than color additives, do not need FDA approval before they go on the market. Broad concentration ranges reported in each product category in 1981 were < 0.1% and > 0.1% to 1%. Studies show the in vivo estrogenicity of MP and EP at human exposure levels, and indicate that populations exposed to large amounts of MP and EP may have a high burden of estrogenicity-related diseases.

Somatostatin (also known as growth hormone-inhibiting hormone) is a naturally-occurring peptide hormone that regulates the endocrine system. Somatostatin is produced in gastrointestinal (GI) tract, pancreas, hypothalamus, and central nervous system (CNS) and some other organs. Somatostatin is initially secreted as a 116 amino acid precursor, preprosomatostatin, which undergoes endoproteolytic cleavage to prosomastatin. Prosomastatin is further process into two active forms, shorter isoform somatostatin-14 works primarily in the brain, while the longer somatostatin-28 (SST-28) form operates in the GI tract. Somatostatin produces predominantly neuroendocrine inhibitory effects across multiple systems. It is known to inhibit GI, endocrine, exocrine, pancreatic, and pituitary secretions, as well as modify neurotransmission and memory formation in the CNS. Somatostatin binds to six different receptors in various systems and cells throughout the body to produce its regulatory effect. These receptors are specific to somatostatin and classify as G-protein coupled receptors (GPCR). Somatostatin half-life is between 1 to 3 minutes. Due to its short half-life, somatostatin has been formulated exogenously in much more stable forms with a longer half-life; this allows for its primary clinical use, which is the treatment of neuroendocrine tumors.

Dimethyltubocurarine (metocurine) is a non-depolarizing muscle relaxant. It binds to muscle acetylcholine receptor by bridging the to alpha and non-alpha subunits from the ligand binding site. Dimethyltubocurarine was used as an anesthesia adjunct to induce skeletal muscle relaxation and to reduce the intensity of muscle contractions in convulsive therapy.