They can be unique molecules or mixtures of molecules known as formulations. Glyphosate is the active ingredient in herbicide formulations containing it. Ether was once used in pharmaceutical formulations. Benzalkonium chloride formulations for consumer use are dilute solutions. The ingredients used may be very different from later formulations and current products. Chlorothalonil is commercially available in many different formulations and delivery methods. Some manufacturers have proprietary plastic formulations for their products. There are several oral phosphate formulations which are prepared extemporaneously. As a biologic, etanercept is subject to different laws from those applicable to chemical formulations. Ketorolac is available in intravenous and intramuscular formulations. It is available in tablet and liquid formulations. Opium tincture is one of the most potent oral formulations of morphine available by prescription. Most commonly it refers to time dependent release in oral dose formulations. Several different formulations of POP are marketed. BB creams come in a variety of different formulations.