On a Urine Drug Test, THC will appear as a positive within 2-5 hours of use. How long it will still show on a urine drug test is estimated based on frequency of use, but does not take into account the weight and body fat of the marijuana user:1  One Time User may show positive for 1-6 days. 2  Moderate User may show positive for 7-13 days.n a Urine Drug Test, THC will appear as a positive within 2-5 hours of use. How long it will still show on a urine drug test is estimated based on frequency of use, but does not take into account the weight and body fat of the marijuana user:
Submit. Â· just now. Report Abuse. Three common sugars share the same molecular formula: C6H12O6. Because of their six carbon atoms, each is a hexose. They are: glucose, blood sugar, the immediate source of energy for cellular respiration galactose, a sugar in milk (and yogurt), and fructose, a sugar found in honey.Although all three share the same molecular formula (C6H12O6), the arrangement of atoms differs in each case.ecause of their six carbon atoms, each is a hexose. They are: glucose, blood sugar, the immediate source of energy for cellular respiration galactose, a sugar in milk (and yogurt), and fructose, a sugar found in honey.
Abstract. This paper describes a study on the oxidation of d-fructose with molecular oxygen on Pt/C catalysts. Two major products are formed: 2-keto-d -gluconic acid and d-threo-hexo-2,5-diulose (â5-ketofructoseâ).herefore, it can be concluded that, besides 2-ke-togluconic acid, D-threo-hexo-2,5-diulose, or '5-keto-fructose', is formed during the oxidation of fructose with molecular oxygen over Pt/C catalysts. The latter compound is somewhat unexpected, since L-sorbose is oxidized first at C-1 and subsequently at C-6 [ 16].