(22R)-18-Acetoxy-5,6β-epoxy-4β,22-dihydroxy-1-oxo-5β-ergosta-2,24-dien-26-oic acid δ-lactone is a chemical compound registered under CAS number 21902-99-8, with the molecular formula C30H40O7 and a molecular weight of about 512.64 g/mol. It is also known as Withacnistin. FireTardant supplies (22R)-18-Acetoxy-5,6β-epoxy-4β,22-dihydroxy-1-oxo-5β-ergosta-2,24-dien-26-oic acid δ-lactone for laboratory research and bulk production; product code 846923. Send an inquiry for purity, packaging, price and lead time.