ChemEd DL Resource Groups

129 Results

xylitol C₅H₁₂O₅ (Other (1))
3D Structure

D-glycerate C₃H₅O₄ (Other (1))
3D Structure

D-glyceric_acid C₃H₆O₄ (Other (1))
3D Structure

deoxyxanthosine C₁₀H₁₂N₄O₅ (Other (1))
3D Structure

deoxyuridine C₉H₁₂N₂O₅ (Other (1))
3D Structure

deoxycytidine C₉H₁₃N₃O₄ (Other (1))
3D Structure

deoxyinosine C₁₀H₁₂N₄O₄ (Other (1))
3D Structure

deoxyguanosine C₁₀H₁₃N₅O₄ (Other (1))
3D Structure

deoxyadenosine C₁₀H₁₃N₅O₃ (Other (1))
3D Structure

Beta-D-fructofuranose-6-phosphate C₆H₁₁O₉P (Other (1))
3D Structure

5-phosphoribosyl-4-N-succinocarboxamide-5-aminoimidazole C₁₃H₁₅N₄O₁₂P (Other (1))
3D Structure

5-phospho-alpha-D-ribosyl-1-pyrophosphate C₅H₈O₁₄P₃ (Other (1))
3D Structure

2-phospho-D-glycerate C₃H₇O₇P (Other (1))
3D Structure

UDP-N-acetyl-alpha-D-glucosaminopyranose C₁₇H₂₇N₃O₁₇P₂ (Other (1))
3D Structure

UDP-alpha-D-xylopyranose C₁₄H₂₂N₂O₁₆P₂ (Other (1))
3D Structure

NADH C₂₁H₂₉N₇O₁₄P₂ (Other (1))
3D Structure

N-acetyl-neuraminate C₁₁H₁₉NO₉ (Other (1))
3D Structure

N-acetyl-D-mannosamine-6-phosphate C₈H₁₆NO₉P (Other (1))
3D Structure

L-ribulose-5-phosphate C₅H₁₁O₈P (Other (1))
3D Structure

dihydroxyacetone phosphate C₃H₇O₆P (Other (1))
3D Structure

D-glyceraldehyde-3-phosphate C₃H₇O₆P (Other (1))
3D Structure

xanthosine C₁₀H₁₂N₄O₆ (Other (1))
3D Structure

uridine C₉H₁₂N₂O₆ (Other (1))
3D Structure

UDP-beta-L-arabinopyranose C₁₄H₂₀N₂O₁₆P₂ (Other (1))
3D Structure

thymidine C₁₀H₁₄N₂O₅ (Other (1))
3D Structure

testosterone C₁₉H₂₈O₂ (Other (1))
3D Structure

sedoheptulose C₇H₁₄O₇ (Other (1))
3D Structure

L-3-hydroxyproline C₅H₉NO₃ (Other (1))
3D Structure

inosine C₁₀H₁₂N₄O₅ (Other (1))
3D Structure

hypoxanthine C₅H₄N₄O (Other (1))
3D Structure

guanosine C₁₀H₁₃N₅O₅ (Other (1))
3D Structure

estrone C₁₈H₂₂O₂ (Other (1))
3D Structure

dihydro-thymine C₅H₈N₂O₂ (Other (1))
3D Structure

D-glycero-D-galacto-heptose C₇H₁₄O₇ (Other (1))
3D Structure

D-glycero-D-manno-heptose C₇H₁₄O₇ (Other (1))
3D Structure

D-4-hydroxyproline C₅H₉NO₃ (Other (1))
3D Structure

cytidine C₉H₁₃N₃O₅ (Other (1))
3D Structure

beta-L-xylopyranose C₅H₁₀O₅ (Other (1))
3D Structure

beta-L-threofuranose C₄H₈O₄ (Other (1))
3D Structure

beta-L-lyxopyranose C₅H₁₀O₅ (Other (1))
3D Structure

beta-L-erythrofuranose C₄H₈O₄ (Other (1))
3D Structure

beta-D-xylopyranose C₅H₁₀O₅ (Other (1))
3D Structure

beta-D-talopyranose C₆H₁₂O₆ (Other (1))
3D Structure

beta-D-ribopyranose C₅H₁₀O₅ (Other (1))
3D Structure

beta-D-ribofuranose C₅H₁₀O₅ (Other (1))
3D Structure

beta-D-mannopyranose C₆H₁₂O₆ (Other (1))
3D Structure

beta-D-lyxopyranose C₅H₁₀O₅ (Other (1))
3D Structure

beta-D-idopyranose C₆H₁₂O₆ (Other (1))
3D Structure

beta-D-glucopyranose C₆H₁₂O₆ (Other (1))
3D Structure

beta-D-galactopyranose C₆H₁₂O₆ (Other (1))
3D Structure

beta-D-fructopyranose C₆H₁₂O₆ (Other (1))
3D Structure

beta-D-fructofuranose C₆H₁₂O₆ (Other (1))
3D Structure

beta-D-arabinopyranose C₅H₁₀O₅ (Other (1))
3D Structure

beta-D-arabinofuranose C₅H₁₀O₅ (Other (1))
3D Structure

beta-D-allopyranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-L-xylopyranose C₅H₁₀O₅ (Other (1))
3D Structure

alpha-L-sorbopyranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-L-ribopyranose C₅H₁₀O₅ (Other (1))
3D Structure

alpha-L-galactopyranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-L-lyxopyranose C₅H₁₀O₅ (Other (1))
3D Structure

alpha-L-rhamnopyranose C₆H₁₂O₅ (Other (1))
3D Structure

6-deoxy-L-talose C₆H₁₂O₅ (Other (1))
3D Structure

6-deoxy-D-altrose C₆H₁₂O₅ (Other (1))
3D Structure

2-keto-3-deoxy-D-gluconate C₆H₉O₆ (Other (1))
3D Structure

5-hydroxymethylcytosine C₅H₇N₃O₂ (Other (1))
3D Structure

D-glucurono-3,6-lactone C₆H₈O₆ (Other (1))
3D Structure

Beta-D-glucopyranose-6-phosphate C₆H₁₁O₉P (Other (1))
3D Structure

Organic Nitrogen Compounds (Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.

N-acetyl-D-mannosamine C₈H₁₅NO₆ (Other (1))
3D Structure

N-acetyl-D-glucosamine C₈H₁₅NO₆ (Other (1))
3D Structure

L-xylonate C₅H₉O₆ (Other (1))
3D Structure

L-threonate C₄H₇O₅ (Other (1))
3D Structure

L-sorbose C₆H₁₂O₆ (Other (1))
3D Structure

L-ribulose C₅H₁₀O₅ (Other (1))
3D Structure

L-rhamnose C₆H₁₂O₅ (Other (1))
3D Structure

L-lyxonate C₅H₉O₆ (Other (1))
3D Structure

L-gulose C₆H₁₂O₆ (Other (1))
3D Structure

L-gulonate C₆H₁₁O₇ (Other (1))
3D Structure

L-glyceraldehyde C₃H₆O₃ (Other (1))
3D Structure

L-fucose C₆H₁₂O₅ (Other (1))
3D Structure

L-erythrose C₄H₈O₄ (Other (1))
3D Structure

L-dehydroascorbate C₆H₆O₆ (Other (1))
3D Structure

L-arabitol C₅H₁₂O₅ (Other (1))
3D Structure

L-arabinose C₅H₁₀O₅ (Other (1))
3D Structure

L-4-hydroxyproline C₅H₉NO₃ (Other (1))
3D Structure

D-manno-heptulose C₇H₁₄O₇ (Other (1))
3D Structure

D-glucuronate C₆H₁₀O₇ (Other (1))
3D Structure

D-gluconate C₆H₁₁O₇ (Other (1))
3D Structure

D-glucarate C₆H₈O₈ (Other (1))
3D Structure

D-fucose C₆H₁₂O₅ (Other (1))
3D Structure

alpha-L-fucopyranose C₆H₁₂O₅ (Other (1))
3D Structure

alpha-D-xylopyranose C₅H₁₀O₅ (Other (1))
3D Structure

alpha-D-threofuranose C₄H₈O₄ (Other (1))
3D Structure

alpha-D-xylofuranose C₅H₁₀O₅ (Other (1))
3D Structure

alpha-D-talopyranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-D-tagatopyranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-D-ribopyranose C₅H₁₀O₅ (Other (1))
3D Structure

alpha-D-ribofuranose C₅H₁₀O₅ (Other (1))
3D Structure

alpha-D-rhamnopyranose C₆H₁₂O₅ (Other (1))
3D Structure

alpha-D-psicopyranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-D-mannopyranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-D-idopyranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-D-lyxopyranose C₅H₁₀O₅ (Other (1))
3D Structure

alpha-D-gulopyranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-D-glucuronopyranose-1-phosphate C₆H₁₁O₁₀P (Other (1))
3D Structure

alpha-D-glucopyranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-D-galactopyranose C₆H₁₂O₆ (Other (1))
3D Structure

6-deoxy-alpha-D-glucopyranose C₆H₁₂O₅ (Other (1))
3D Structure

6-deoxy-alpha-D-talopyranose C₆H₁₂O₅ (Other (1))
3D Structure

6-deoxy-beta-D-altropyranose C₆H₁₂O₅ (Other (1))
3D Structure

6-deoxy-beta-D-glucopyranose C₆H₁₂O₅ (Other (1))
3D Structure

6-deoxy-beta-D-idopyranose C₆H₁₂O₅ (Other (1))
3D Structure

6-deoxy-D-glucose C₆H₁₂O₅ (Other (1))
3D Structure

adenosine C₁₀H₁₃N₅O₄ (Other (1))
3D Structure

alpha-D-allopyranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-D-arabinofuranose C₅H₁₀O₅ (Other (1))
3D Structure

alpha-D-arabinopyranose C₅H₁₀O₅ (Other (1))
3D Structure

alpha-D-erythro-pentulofuranose C₅H₁₀O₅ (Other (1))
3D Structure

alpha-D-fructofuranose C₆H₁₂O₆ (Other (1))
3D Structure

alpha-D-fucopyranose C₆H₁₂O₅ (Other (1))
3D Structure

8-azaguanine C₄H₄N₆O (Other (1))
3D Structure

5-phosphoribosyl-N-formylglycinamide C₈H₁₃N₂O₉P (Other (1))
3D Structure

5-phosphoribosyl-5-aminoimidazole C₈H₁₃N₃O₇P (Other (1))
3D Structure

5-methylcytosine C₅H₇N₃O (Other (1))
3D Structure

5-keto-4-deoxy-D-glucarate C₆H₆O₇ (Other (1))
3D Structure

17-alpha-hydroxyprogesterone C₂₁H₃₀O₃ (Other (1))
3D Structure

Nature of Proteins (Movie/Animation, Audio/Visual (8))
Effect of pH on solubility, denaturing proteins, hydrolysis in strong base, binding to coomassie blue, dying wool and cotton, gel filtration column, reaction of ninhydrin with amino acids and precipitating protein with ammonium sulfate are demonstrated.

Molecular Models of Antioxidants and Radicals

(Interactive Simulation (1))

This month's featured molecules come from the paper by John M. Berger, Roshniben J. Rana, Hira Javeed, Iqra Javeed, and Sandi L. Schulien (1) describing the use of DPPH to measure antioxidant activity. DPPH was one of the featured molecules in September 2007 (2) and the basics of antioxidant activity were introduced in last month's column (3). In addition, some of the other molecules in the paper are already in the featured molecules collection (4). The remaining structures in the Figure 1 and Table 1 of the paper have been added to the collection. All structures have been optimized at the 6-311G(D,P) level. These molecules suggest a number of possible student activities, some reminiscent of previous columns and some new. (R,R,R)-α-tocopherol is one of the molecules in the mixture that goes by the name vitamin E. These molecules differ in the substituents on the benzene ring and on whether or not there are alternating double bonds in the phytyl tail. In (R,R,R)-α-tocopherol the R's refer to the three chiral carbon atoms in tail while α refers to the substituents on the ring. (R,R,R)-α-Tocopherol is the form found in nature. An interesting literature problem would be to have students learn more about the vitamin E mixture and the differing antioxidant activity of the various constituents. Additionally they could be asked to explore the difference between the word natural as used by a chemist, and "natural" as used on vitamin E supplements. Can students find regulations governing the use of the term "natural"? Can they suggest alternative legislation, and defend their ideas? If students read about vitamin C they will discover that only L-ascorbic acid is useful in the body. It would be interesting to extend the experiment described in the Berger et al. paper (1) to include D-ascorbic acid. How do the antioxidant abilities of the enantiomers, as determined by reaction with DPPH compare? Is this consistent with the behavior in the body? Why or why not? Berger et al. mention two other stable neutral radicals, TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) and Fremy's salt. In a reversal from the use of stable radicals to measure antioxidant properties, these two molecules have proven to be very versatile oxidation catalysts in organic synthesis, and would make a rich source of research papers for students in undergraduate organic courses.

Molecular Models of DNA

(Interactive Simulation (1))

The featured molecules this month come from the paper by David T. Crouse on the X-ray determination of the structure of DNA. Given that most students are aware of the double helix, it seems appropriate to back up a little and examine the components that give rise to this structure. Accordingly, the molecule collection includes: Purine and pyrimidine, structural precursors of the four bases found in DNA: cytosine (C), thymine (T), adenine (A), and guanine (G) The four corresponding deoxyribonucleosides The four deoxyribonucleotides (the nucleoside monophosphates) A two-base-pair fragment showing the AT and GC hydrogen-bonded complements Several small 24-base-pair DNA fragments polyAT, polyGC, and a random array of bases. The DNA fragments provide a good opportunity to have students explore features of the Jmol and Chime menus. Using the Jmol menu as an example (right-click on the structure to bring up the menu) students can use the measuring tools to get an idea of the length of a complete turn in the DNA, the relative widths of the major and minor grooves, and the diameter of the helix. They can use the coloring schemes to detect the various base pair combinations, and learn to read the code for the random sequence. In Chime they can use the Shapely coloring scheme for this same purpose. Exploring other aspects of the menu will allow students to present the molecules in the various forms, including ribbon and cartoon views. In RNA, thymine is replaced by uracil, and the sugar moiety has an axial hydroxyl group on the carbon atom adjacent to the base binding site (the 2? carbon). The structures of uracil and of uridine monophosphate are included in the molecule collection. Students can use the Web to download and examine more complex DNAs using a site such as the Nucleic Acid Database at Rutgers University.