As used in this article, unless the context requires a different meaning: “Department” means the Department of State Police. “Ephedrine or related compounds” means ephedrine and pseudoephedrine base or their salts, isomers, or salts of isomers. “Pharmacy” means any establishment or institution from which drugs, medicines, or medicinal chemicals are dispensed or offered for sale or on which a sign is displayed bearing the words “apothecary,” “druggist,” “drugs,” “drug store,” “drug sundries,” “medicine store,” “pharmacist,” “pharmacy,” or “prescriptions filled” or any similar words intended to indicate that the practice of pharmacy is being conducted pursuant to a license issued under Chapter 33 (§ 54.1-3300 et seq.) of Title 54.1. “Retail distributor” means an entity licensed to conduct business in the Commonwealth that offers for sale to the public at a retail outlet any nonprescription compound, mixture, or preparation containing ephedrine or related compounds. “System” or “electronic system” means a real-time electronic recordkeeping and monitoring system for the sale of ephedrine or related compounds.