... Please enable JavaScript to use all the features on this page. Tetrahedron: Asymmetry. Volume 2, Issue 7, 1991, Pages 543–554. Cover image Cover image. ... C 7 H 15 NO 2. Ee = 90% [by HPLC analysis of tetraacetylglucose thiourea derivative]. [α] D 25 +26.7 (c 0.6, H 2 O). ...