1. Potassium iodide (KI): This compound is a white, crystalline solid that is highly soluble in water. It is used as a source of iodine in various applications, including iodized salt, medicine, and photography.

2. Sodium iodide (NaI): Similar to potassium iodide, sodium iodide is a colorless, crystalline compound that is highly soluble in water. It is used as a contrast agent in X-ray imaging, as well as in scintillation detectors.

3. Iodine tincture: This is a solution of iodine dissolved in alcohol. It is commonly used as a topical antiseptic and disinfectant, due to iodine's antimicrobial properties.