美国《化学文摘》（简称ＣＡ）是目前世界上最著名、最具权威性的化学文献检索工具。它所收录的文献内容非常广泛，不仅仅是无机化学、有机化学、分析化学等纯化学文献，而且包括各学科领域中与化学问题相关的文献。如生命科学、工农业生产、宇宙科学等领域中与化学有关的文献 The United States “Chemical Abstracts” (referred to as CA) is the world’s most famous and authoritative chemical literature search tool. It contains a wide range of references, not just purely chemical literature such as Inorganic Chemistry, Organic Chemistry, Analytical Chemistry, but also literature related to chemical issues in all subject areas. Such as life sciences, industrial and agricultural production, the universe of science and other areas of chemical-related literature