dihydroquinidine dihydroquinidine dihydroquinidine (also called hydroquinidine) is an organic compound, a cinchona alkaloid closely related to quinine. the specific rotation is +226° in ethanol at 2 g/100 ml. a derivative of this molecule is used as chiral ligand in the ad-mix for sharpless dihydroxylation. dihydroquinidine names iupac name (s)-octan-2-yl]-(6-methoxyquinolin-4-yl)methanol other names (9s)-10,11-dihydro-6'-methoxycinchonan-9-ol identifiers cas number 1435-55-8 y 3d model (jsmol) interactive image chembl chembl280522 n chemspider 82624 echa infocard 100.007.578 pubchem cid 91503 unii 8p68xpy4hg n inchi inchi=1s/c20h26n2o2/c1-3-13-12-22-9-7-14(13)10-19(22)20(23)16-6-8-21-18-5-4-15(24-2)11-17(16)18/h4-6,8,11,13-14,19-20,23h,3,7,9-10,12h2,1-2h3/t13-,14-,19+,20-/m0/s1key: ljoqgzacksywch-lhhvklhasa-n smiles (o)(c=1c2=c(c=cc(oc)=c2)n=cc1)3(4c(cc)(c3)cc4) properties chemical formula c20h26n2o2 molar mass 326.440 g·mol−1 melting point 169 to 172 °c (336 to 342 °f; 442 to 445 k) pharmacology atc code c01ba13 (who) except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). n verify (what is yn ?) infobox references the substance is also a class ia antiarrhythmic medication.