4-Hydroxy Ketotifen Price Not Available 25mg 4-Hydroxy Ketotifen Supplier Page Catalog Number R051446 Molecular Formula C19H21NO2S CAS# 126939-27-3 Purity ≥95% Inchi InChI=1S/C19H21NO2S/c1-20-9-6-14(7-10-20)19(22)15-5-3-2-4-13(15)12-17(21)18-16(19)8-11-23-18/h2-5,8,11,14,22H,6-7,9-10,12H2,1H3 Inchi Key LZPRFURMCOCGDP-UHFFFAOYSA-N SMILES CN1CCC(CC1)C2(C3=C(C(=O)CC4=CC=CC=C42)SC=C3)O Size 25mg Supplier Page https://www.musechem.com/product/R051446.html