Novel Position-Specific 18O/16O Measurement of Carbohydrates. II. The Complete Intramolecular 18O/16O Profile of the Glucose Unit in a Starch of C4 Origin was written by Ma, Ran;Zhao, Yu;Liu, Lan;Zhu, Zhenyu;Wang, Bo;Wang, Ying;Yin, Xijie;Su, Jing;Zhou, Youping. And the article was included in Analytical Chemistry (Washington, DC, United States) in 2020.Computed Properties of C12H20O6 This article mentions the following:
Information about plant photosynthetic carbon assimilation, physiol., and biochem. is locked in the 18O/16O ratios of the individual positions of higher plants carbohydrates but is under-utilized due to the difficulty of making these determinations We report the extension of the wet chem. approach we used to access the 18O/16O ratio of O-3 of glucose with a novel GC/Pyrolysis/IRMS-based method, to determine the 18O/16O ratios of O-4, O-5 and O-6. The O atoms (OH groups) at positions 1, 2, 5 and 6 of glucose were protected by acetonation (converting to 1,2;5,6-di-O-isopropylidene-glucofuranose, DAGF). The DAGF was then converted to 6-bromo-6-deoxy-1,2;3,5-di-O-isopropylidene-glucofuranose (6-bromo-DAGF) and Rayleigh-type fractionation. Isotope mass balance was then applied to calculate the 18O/16O of O-5 and O-6 as a whole and O-6 resp. Quant. conversion of glucose with phenylhydrazine to phenylglucosazone also allowed for the calculation of 18O2 by applying isotope mass balance between the two. A C4 starch-derived glucose intramol. 18O profile is now determined: O-3 is relatively enriched (by 12.16mUr), O-4 relatively depleted (by 20.40-31.11mUr) and O-2 marginally enriched (by 2.40mUr) against the mol. average In the experiment, the researchers used many compounds, for example, (3aR,5S,6S,6aR)-5-((R)-2,2-Dimethyl-1,3-dioxolan-4-yl)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-ol (cas: 582-52-5Computed Properties of C12H20O6).
(3aR,5S,6S,6aR)-5-((R)-2,2-Dimethyl-1,3-dioxolan-4-yl)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-ol (cas: 582-52-5) belongs to tetrahydrofuran derivatives. Tetrahydrofuran (THF), or oxolane, is mainly used as a precursor to polymers. Being polar and having a wide liquid range, THF is a versatile solvent. Tetrahydrofuran (THF) is primarily used as a precursor to polymers including for surface coating, adhesives, and printing inks.Computed Properties of C12H20O6
Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem