This document is a catalog listing reference standards available from USP with their catalog numbers, descriptions, current and previous lot numbers, CAS numbers, NDC codes, and unit prices. It includes listings for over 100 reference standards including abacavir sulfate, acetaminophen, acetylcholine chloride, acyclovir, and adipic acid among many others. Each listing provides identifying and historical batch information for the reference standard as well as its current price.