CAS Source Index (CASSI) Search Tool
https://cassi.cas.org/about.jsp19.12.2021 · Beyond CASSI. Beyond CASSI features journal title abbreviations from early chemical literature and other historical reference sources that may not be listed in the CASSI Search Tool. Marion Peters, UCLA Librarian Emeritus, compiled a list of such abbreviations.
Beyond CASSISM
https://www.cas.org/sites/default/files/documents/beyond_cassi.pdfBeyond CASSI SM. Found when searching the early chemical literature and other historical reference sources, shortened journal title abbreviations may not be listed in the CASSI Search Tool. As noted, “the use of initialisms in abbreviations of journal titles, rampant throughout the 20th century, stretches back into the 19th century as well ...