Pregna-4,9(11),16-triene-3,20-dione Price Not Available 1mg Pregna-4,9(11),16-triene-3,20-dione Supplier Page Catalog Number R018676 Molecular Formula C21H26O2 CAS# 21590-20-5 Purity ≥98% Inchi InChI=1S/C21H26O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h6,9,12,16,18H,4-5,7-8,10-11H2,1-3H3/t16-,18-,20-,21+/m0/s1 Inchi Key TZEZJENWQRMZIX-BVPXEZJJSA-N SMILES CC(=O)C1=CCC2C1(CC=C3C2CCC4=CC(=O)CCC43C)C Size 1mg Supplier Page https://www.musechem.com/product/R018676.html