Fetch and Extract DATA via Puppeteer from an JS WebSite

I need a JS code running with nodejs and puppeteer to get the CAS# and Title of a Chemical search in pubchem. For Example: this is the link: https://pubchem.ncbi.nlm.nih.gov/#query=MES where MES is the name of the chemical and the result should be: 4432-31-9; 2-Morpholinoethanesulfonic Acid; 4-Morpholineethanesulfonic Acid; 2-(N-Morpholino)Ethanesulfonic Acid; MES; 2-Morpholinoethanesulphonic Acid; 4-Morpholinethanesulfonic Acid; 2-Morpholin-4-Ylethanesulfonic Acid; ... The REGEX [0-9]+\-[0-9][0-9]\-[0-9] is the CAS Reg Number, which should also beside the TITLE extracted and both saved in a FILE name [login to view URL] f.e. Filename: [login to view URL] where the Title is saved.