is conjugate acid of is enantiomer of (R)-donepezil(1+) 380.22202 C1(=C(C=C2C(=C1)C[C@](C2=O)(CC3CC[NH+](CC3)CC4=CC=CC=C4)[H])OC)OC +1 380.507 CHEBI:145502 chebi_ontology (2R)-1-benzyl-4-[(5,6-dimethoxy-1-oxo-2,3-dihydro-1H-inden-2-yl)methyl]piperidinium InChI=1S/C24H29NO3/c1-27-22-14-19-13-20(24(26)21(19)15-23(22)28-2)12-17-8-10-25(11-9-17)16-18-6-4-3-5-7-18/h3-7,14-15,17,20H,8-13,16H2,1-2H3/p+1/t20-/m1/s1 C24H30NO3 ADEBPBSSDYVVLD-HXUWFJFHSA-O A piperidinium ion resulting from the protonation of the amino group of (R)-donepezil. (S)-donepezil(1+) piperidinium ion (R)-donepezil