id author title date pages extension mime words sentence flesch summary cache txt istl-2605 Navigating the National Center for Biotechnology Information’s Databases on the Medicinal Chemistry of Homocystinuria .html text/html 1633 140 49 In NCBI PubChem database, sort the list of related compounds of Cystathionine by “Create Date” and follow the link to L-Cystathionine (Figure 11). Search with the terms below in PubChem Compound at https://pubchem.ncbi.nlm.nih.gov/. Pyridoxine https://pubchem.ncbi.nlm.nih.gov/compound/1054 Cyanocobalamin does not have a 3-D structure since it is a complex but it has a 2-D rendering https://pubchem.ncbi.nlm.nih.gov/compound/5311498s Folic Acid https://pubchem.ncbi.nlm.nih.gov/compound/135398658 L-methionine https://pubchem.ncbi.nlm.nih.gov/compound/6137 Betaine https://pubchem.ncbi.nlm.nih.gov/compound/247 Multiple articles have been written about searching NCBI databases (NCBI Resource Coordinators 2016) including GenBank (Benson et al. 2013), Gene (Brown et al. 2015), MedGen (Louden 2020), OMIM (Amberger et cache/istl-2605.html txt/istl-2605.txt