<https://esschemco.com/product/metabolites-impurities/desmethyl-omeprazole/#webpage>
<http://schema.org/description>
"IN STOCK | Buy 5-O-Desmethyl Omeprazole from ESS. | Purity: 99% by HPLC; MF: C16H17N3O3S: CAS: 151602-49-2"
<https://esschemco.com/product/metabolites-impurities/desmethyl-omeprazole/>