5,6-Dimethoxy-2-(4-pyridylmethylene)-1-indanone (Donepezil Impurity) Price Not Available 5mg 5,6-Dimethoxy-2-(4-pyridylmethylene)-1-indanone (Donepezil Impurity) Supplier Page Catalog Number R009886 Molecular Formula C17H15NO3 CAS# 4803-74-1 Purity ≥98% Inchi InChI=1S/C17H15NO3/c1-20-15-9-12-8-13(7-11-3-5-18-6-4-11)17(19)14(12)10-16(15)21-2/h3-7,9-10H,8H2,1-2H3/b13-7+ Inchi Key SUVQWDLUAIFZKM-NTUHNPAUSA-N SMILES COC1=C(C=C2C(=C1)CC(=CC3=CC=NC=C3)C2=O)OC Size 5mg Supplier Page https://www.musechem.com/product/R009886.html