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.