Dr. Glaser's Portal to Organic Chemistry Destinations on the World Wide Web


Organic Chemistry at Work - The Business Side
ChemIndustry.com - The worldwide search engine for the chemical industry | Finding an Organic Chemistry Job | Excite's Portal to the Chemical Industry | The Home Page of the Chemical Industry | ... a few of the Top-50 Chemical Companies include ... The Dow Chemical Company | The E. I. du Pont de Nemours and Company | Union Carbide | Huntsman Chemicals | ICI Americas | Praxair | Bayer | BASF Corporation | Eastman Chemical Company | Merck | Monsanto - A Life-Sciences Company | Aventis - Our Challenge is Life | Exxon Corporation | Shell Corporation | Mobil Corporation | BP Amoco Corporation | Ashland Oil | Chevron | Occidental Petroleum | SmithKline Beecham | American Peptide Company ... take a look at a Listing of Newly Approved Drug Therapies ...


Organic Chemists at Work - Employment Opportunities
What Can I Do With a Degree in Chemistry? | Employment in Chemical Education | Jobs Search Online: ScienceJobs


Chemistry Organizations and Publications
Chemistry Associations & Journals | Chemistry Magazines & Club Activities


General Links to Organic Chemistry Resources
Periodic Systems | Online Texts and Review Materials | Chemistry Portals and Link Collections | Online Databases of Molecules | Animations - Reaction Mechanisms and Dynamics | Online Computations in Chemistry


Chapter-By-Chapter Links to Organic Chemistry Resources
Chapter 1: Allotropes of Carbon: Diamond, Lonsdaleite, Graphite & Fullerenes | C-Isotopes & Carbon Dating | Atomic Orbitals | Lewis Structures & Electronegativity | Ionization Energies & Electron Affinities | Acids & Bases | Curved Arrows
Chapter 2: Hybridization | Molecular Orbitals | Electron Density | Intermolecular Bonding
Chapter 3: Allotropes of Carbon: Diamond, Lonsdaleite, Graphite & Fullerenes | Hydrocarbons | Ring Strain | Conformations of Alkanes
Chapter 4: Thermodynamics | Halogenation of Alkanes
Chapter 5: Chirality | Resolution
Chapter 6: Sources and Uses of Alkyl Halides | Nucleophilic Substitution | Elimination
Chapter 7: Structure, Synthesis and Properties of Alkenes
Chapter 8: Reactions of Alkenes
Chapter 9: Reactions of Alkynes
Chapter 10: Structure, Synthesis and Properties of Alcohols | Organometallic Chemistry
Chapter 11: Reactions of Alcohols | Reactions of Diols
Chapter 12: General Spectroscopy | Infrared Spectrocopy | Mass Spectroscopy
Chapter 13: Nuclear Magnetic Resonance Spectroscopy
Chapter 14: Ethers | Epoxides | Mercaptanes
Chapter 15: Diels-Alder Reactions | Ultraviolet & Visible Light and UV/Vis Spectroscopy
Chapter 16: Benzene | Polycyclic Aromatic Hydrocarbons
Chapter 17: Anilines & Smoking | Phenols
Chapter 18: Aldehydes and Ketones
Chapter 19: Amines | Alkaloids
Chapter 20: Carboxylic Acids
Chapter 21: Esters | Amides | Acid Halides | Anhydrides
Chapter 22: Condensation Reactions
Chapter 23: Carbohydrates | Nucleic Acids
Chapter 24: Amino Acids | Peptide | Proteins |
Chapter 25: Lipids | Detergents | Steroids |
Chapter 26: Polymers

Chemistry Organizations and Publications

Chemistry Associations & Journals
American Chemical Society, ACS Journals
American Institute of Chemical Engineers
Our friends in Canada: The Chemical Institute of Canada
Our friends south of the border: Asociacion Nacional De La Industria Quimica Mexico
The fellows in the UK: Royal Society of Chemistry
Unsere Freunde in Deutschland: The German Chemical Society
Our friends in Japan: The Chemical Society of Japan
... and there are many more ...
... and the global organization is in progress ...
IUPAC - the International Union of Pure and Applied Chemistry and Chemistry Education International
WATOC - the World Association of Theoretically Oriented Chemists

Chemistry Magazines & Club Activities
Classic Chemistry at Le Moyne College
ChemWeb.com - The World Wide Club for the Chemical Community
Elemental Discoveries - An online Chemistry Magazine
The Alchemist - The ChemWeb Magazine
The Why Files - The Science Behind the News!
SCIENCE IS FUN in the Lab of Prof. Bassam Shakashiri
Kitchen Scientists - A Guide To Home Science Experiments suggested by Chrissy
Brenna Lorenz' Sizzling Organic Chemistry Dramas!
Chemistry Song Collection
Erik's silly Chemistry Humor


General Links To Organic Chemistry Resources

Online Periodic System of the Elements
A simple
Periodic System of the Elements with elements colored by type.
A simple Periodic System of the Elements with some element data
Winter's Periodic System of the Elements
Alternate styles of Pictorial Periodic Tables including the Benfey Spiral
F. James Holler and John P. Selegue's A Comic Book Periodic Table
The Chemical Society's A Visual Interpretation of the Table of Elements

Online Texts and Review Materials
Glossary of common terms in Organic Chemistry Organic Chemistry Online Web-sters' Organic Chemistry
CADUCEUS MCAT Organic Chemistry by Scientia Inc.
CHEMystery's Organic Chemistry.
WeTChe.NL - web tutorials in chemistry
MacMillan online book on Organic Chemistry
Dr. Henry Rzepa's Molecular Modelling for Organic Chemistry
Dr. Robert Wiley's Introductory Organic Chemistry on the Web
Study Aids for Organic Chemistry at Yale University
Learning by Visualization: Visual Aids for Organic Chemistry
Dr. Linda Sweeting's Organic Reaction Quizzes and Reactions
OSU's Electronic Flash Cards - An Educational Resource for Students in Organic Chemistry.
Tutorials with problems and exercises: Organic Chemistry OnLine
Logan's web tutorial on Organic Chemistry
Moss' Online Guide to IUPAC Nomenclature
Advanced Chemistry Development's IUPAC Nomenclature of Organic Chemistry (1979 and 1993) Introduction to Organic Chemistry Nomenclature
Name Reactions in Organic Chemistry
ChemPen3D - Classic Organic Reactions Over 300 named reactions
Name Reaction in Organic Chemistry Collection by the Institute of Chemistry, Skopje, Macedonia
Marcus Brackeen's Name Reaction List; MonomerChem Inc.
Education science software in chemistry: Falcon Software
Kimberlyte Inc.'s Sience and Education Software
Kimberlake's Chemistry
Chemistry at the University of Liverpool

Chemistry Portals and Link Collections
Journal of Chemical Education Internet
ChemPort - Your Port to Online Journals
The Chemistry Place
Winter's Chemdex.org
The WEB-sters' Organic Chemistry
Deslongchamps' Multimedia Chemistry and Biochemistry Resources
Wong's The Learning Matters of Chemistry
About.com Chemistry
Spectroscopy - The ultimate portal to excitation
BioChemNet - Directory of biology and chemistry educational resources online
The University of Georgia's Glactone project.
Georgia State University's ORGANIC CHEMISTRY RESOURCES
University of Virginia's Fun Chemistry Links
Chemistry portal at Harvey Mudd College
Dr. Abby Parrill's Collection of Educational Materials for Organic Chemistry (Michigan State University)
Collection of Chemistry Factoids at Cal State University, Fresno
University of Washington Chemical Images and Databases
Indiana University CHEMINFO - chemical information sources
Dr. Erik Epp's Chemistry Portal
Liz Dorland's Chemistry Tutorial and Resource Page
Assorted Encyclopedias including some with relevance to Organic Chemistry
Department of Energy's Virtual Library of Energy Science and Technology

Online Databases of Molecules
ChemSoft's
ChemFinder
RxList - The Internet Drug Index
USDA Economics and Statistics System
Agency for Toxic Substances and Disease Registry
Carcinogenic Potency Project
Chemical Information Page! - Information on Drugs, Pesticides, Environmental Pollutants, and other Potential Toxins
Pharmacology Central- A structural Who's Who of pharmacology.
UNEP, the United Nations Environmental Protection Site
OSH-Link: An Online Resource Summarizing Current Literature on Occupational Safety and Health
University of Bristol's Molecule of the Month
Woodcock's 1100+ Molecular Models from OUC, (Okanagan University College)
The Wired Chemist's Organic Model Collection
Indiana University Molecular Structure Center
Organic molecules in the WWU Virtual Molecular Model Kit
A VRML gallery of WebMolecules
The MathMol Library - Library of 3-D Molecular Structure
MOLECULES - Molecular Modeling for Chemical Education
Search the InfoChem GmbH Chemical Structure Database
PDB - Protein Data Bank, Research Collaboratory for Structural Bioinformatics
TIM-DB - Domain Structural Data Base for Enzymes
Purdue's site on Vitamins
The Pherolist A database of chemical components identified in sex glands insects.
alphAware - All Natural Legal Consciousness Modulators and Related Reality Enjoyment Gear
Molecular Expressions - Images from the Microscope.
The IMB Jena Image Library Library of Biological Macromolecules

Reaction Mechanisms
The
Chime Resources by Eric Martz
Chemistry-Based Animations
Marco Ziegler's chemVISU - Structure, Dynamics and Reactions
Simple applet animations of SN reactions: SN2, SN1 with Inversion, SN1 with Retention.
Iverson's Movie Directory from UT Austin
Iverson's Organic Chemical Reactions
Ehrler's VRMOL site - Basic Organic Reactions.
Metec, Inc.'s Quicktime Movies of Reaction Mechanisms
The Chemist's Art Gallery. Visualization and animation.
Jeff Gosper's Simulated Addition Reactions
Brunel's site on Molecular Simulations

Online Computations in Chemistry
Sheffield Chemputer



Chapter-By-Chapter Links To Organic Chemistry Resources

Radiocarbon Dating with Carbon-14
Carbon Dating
Carbon-14 Dating Calculator
Other Radiometric Dating Techniques

Atomic Orbitals
Purdue's
Atomic Orbitals
Pictures of Atomic Orbitals

Lewis Dot Structures
ChemTeam's
Bonding and Isomerism
Table of Electronegativities of the Elements
Electronegativity (Mulliken-Jaffe) plotted against atomic number
Electronegativity (Allen) plotted against atomic number

Thermochemical Data of Atoms and Molecules
1 atomic unit = 27.211 eV = 627.51 kcal/mol; 1 eV = 23.061 kcal/mol
Physics Unit Conversion Factors
NIST: Ground levels and ionization energies for the neutral atoms
Ionization energies of molecules: Electron-Impact Ionization Cross Section Database
Definition and tables of Ionization energies and electron affinities
Lattice energies and the strength of ionic bonds

Acidity & Basicity of Organic Compounds
Review ChemTutor's
Acids and Bases
Acidity in DMSO: The Bordwell pKa Table

Curved Arrows
The
Curly Arrows Tutorial of the University of Aberdeen

Hybrid Atomic Orbitals
Hybridization of Carbon Atomic Orbitals

Molecular Orbitals
Organic Chemistry OnLine's section on
Atomic and Molecular Orbitals shows MOs and MO diagrams.
The Squier Group's Atomic Orbitals and Molecular Orbitals

Electron Density
Bader's
Theory of Atoms in Molecules.

Intermolecular Bonding
Overview of types and magnitudes of
Inter- and Intramolecular Forces
ScienceNet's Glossary on Intermolecular Forces
Michael Blaber's page on Intermolecular Forces
CHIME and VRML models of "snapshots" of liquid water and of ice.
CHIME models of Glaser's ab initio structures of the thymine-adenine and guanine-cytosine base pairs.
CHIME model of the enzyme "photolyase".
Dr. Ricky Cox's web site on Noncovalent Interactions in Proteins

Allotropes of Carbon
Collection of Links to Carbon Allotropes
The most beautiful Carbon Allotrope: Diamond
The most common Carbon Allotrope: Graphite
The Minerals' Gallery page on Graphite
Washington University's Fullerene Science Module
The Virtual Chemistry Laboratory on Buckminsterfullerenes
M. Yoshida's Fullerene Gallery
Study: Carbon-rich meteorite may give new clues to origin of life

Hydrocarbons
IUPAC Nomenclature of Hydrocarbons
Erik's short survey table of nomenclature
The hydrocarbon online pages
Chevron's page on "What is a Refinery?"
Active Propane
Hank Hill's Guide to Propane and Propane Accessories
Combustion Chemistry in Real Life: PCI Precision Combustion, Inc.
Combustion and the Environment: Joint Center for Combustion and Environmental Research
Combustion emissions monitoring: LAND combustions
On the lighter side: Spontaneous Human Combustion
Methane Rain? Out of this world? Read the weather report for Titan!

Ring Strain of Hydrocarbons
Cubane is as strained as it gets!
Strained molecules make good explosives: Nitrocubane

Conformations of Alkanes
Parill and Gerway's
Quicktime Movies of conformational changes.
Molecular models of substituted cyclohaxanes

Thermodynamics
ChemMystery's
Thermodynamics Page
Yale University's Index of Heats of Formation.

Halogenation of Alkanes
The Methyl Bromide Phase Out.
Doing something about the environmental problems caused by chlorine: Presidential Green Chemistry Challenge 1998
For radical reactions in vivo, see Longer Living Through Chemistry
Antioxidants: What is PCO?
Antioxidants: Pycnogenol

Chirality
Basic Terminology of Stereochemistry (IUPAC Recommendations 1996)
Dr. Rod Beavon's Fun with Chirality tutorial
Dr. Gorga's web tutorial on Isomers of Organic Compounds
Dr. Margaret Wong's pages on Stereochemistry
Dr. Bauld's web pages on Stereochemistry
Drs. Parrill & Gerway's web pages on Stereochemistry
Chirality of Drugs - Biological Handedness
Exercises with CHIME models: The Stereochemistry Online Page at Colby College.
The Stereochemistry Sources at Okanagan University College
Use the Molecular Models from OUC to practice your "chiral recognition" skills!

Resolution
ChromTech: Separation of enantiomers by chiral chromatography.
Counting on Chiral Drugs

Sources and Uses of Alkyl Halides
Norris' summary of
radical chain bromination of alkanes
Blackburn's electronic flashcards on alkyl halides and alcohols
A brief overview of alkyl halide synthesis.
A very long polyfluorinated alkane: Teflon
Chlorine - Friend or Common Killer
Alternatives to Halon
Molecule of the Month's DDT - A Banned Insecticide
Pro pesticides: IFIC's site on Pesticides
Con pesticides: RACHEL's The Pesticide Failure

Nucleophilic Substitution
Simple applet animations illustrating SN1 and SN2 recations:
SN2 Pathway, SN1 Pathway with Inversion, SN1 Pathway with Retention.
A simple SN2 reaction also is shown in Iverson's Movie Directory from UT Austin
Glaser's Virtual Reality animation of the SN2 reaction of hydroxide with methylchloride. [Requires VRML 2.0 plugin.]

Elimination Reactions
A simple elimination reaction is shown in
Iverson's Movie Directory from UT Austin
Take a look at Dr. Gerway's slides on Elimination Reactions
Dr. Kirsten Wallace's pages on Substitution and Elimination Reactions of Alkyl Halides

Structure, Synthesis and Properties of Alkenes
Glaser's "Chemistry is in the News" Item on
catalytic cracking
Shell's site on Fluid catalytic cracking for better fuels
The Hendrix Group's Petroleum Refining Processes
PEP News Release: Deep catalytic cracking process for increasing production of light olefins
The web Portal of the Refining industry: Refining Online

Reactions of Alkenes
Clarkson's overview of the reactions of alkenes
Markovnikov Rule
Blackburn's electronic flashcards on alkenes.

Alkynes
Donal O'Leary's page on
Alkyne Chemistry
Wiley's pages on alkenes also contain some alkyne chemistry

Structure, Synthesis and Properties of Alcohols
Blackburn's electronic flashcards on
alkyl halides and alcohols
The About.com site on Alcoholism
Alcohol abuse and Adverse Health Effects
A Portal to the antialcoholic Natrexone
The4 Internet's Mental Health pages on the antialcoholic Antabuse

Organometallics
Meth-Cohn's Guide to Organic Synthesis:
The Grignard Reaction
Meth-Cohn's Guide to Organic Synthesis: The Grignard Reactions with Aldehyde and Ketones
Rob Toreki's Organometallic HyperTextBook

Reactions of Alcohols
Vasiliou Lab Homepage: A Database for Alcohol-Metabolizing Enzymes

Reactions of Diols
The Organic Chemistry Virtual Tutor's Shockwave animation of the
Pinacol Rearrangement

General Spectroscopy
Physics 2000 is a tremendous online resource
NIST Physical Reference Data: Atomic Spectroscopic Data
Spectroscopy - The ultimate portal to excitation (literally).
Wiley's spectroscopyNOW.com is on your wavelength
Another superb portal to Spectroscopy
SDBS Integrated Spectral Data Base System for Organic Compounds
Umea Unversity's Analytical Chemistry Springboard
WCAS - West Coast Analytical Service Spectroscopic Tools of the University of Potsdam.
Galactic Industries Corporation Spectral Database
Organic Chemistry OnLine on Spectroscopy

Infrared Spectroscopy
NIST Chemistry WebBook - Thermochemical and spectroscopic data. Includes IR and MS spectra.
SDBS - Integrated Spectral Data Base System for Organic Compounds
Animation of Vibrational Modes of Water
IR Spectroscopy and Table of IR Spectra @ UMSL.
Wiley's IR Tutor
Check out the IR section of the Spectroscopy site.
Organic Chemistry Online's Basic Infrared Spectroscopy
Stanislaus' Tutorial on IR with many problems.
A portal to publication on "Near IR Spectroscopy": NIR Publications
The Perkin Elmer site on FT-IR.
The homepage of Medical Infrared Spectroscopy

Mass Spectroscopy
American Society for Mass Spectroscopy
A History of Mass Spectroscopy
What is modern in MS? Check out the Journal of the American Chemical Society for Mass Spectrometry: JASMS Online.
NIST Chemistry WebBook - An outstanding source for thermochemical and spectroscopic data. Includes IR and MS spectra.
Check out the MS section of the Spectroscopy site.
Paul Young's Basic Mass Spectroscopy
Koen Van Aken's Mass Spectrometry
Organic Chemistry Online's Mass Spectrometry
SciMedia's Introduction to Mass Spectroscopy
Emory University's list of Mass Spectrometry related links.

Nuclear Magnetic Resonance Spectroscopy
Magnetic Resonance Periodic Table
The NMR Information Server
BioMagResBank - BMRB - A Repository for NMR Data on Proteins, Peptides and Nucleic Acids.
Organic Structure Elucidation by Smith, Boggess, and Zajicek. Contains many problems with various NMR, MS and IR spectra.
Check out the NMR section of the Spectroscopy site.
Sheffield Hallam University NMR Spectroscopy Tutorial
Darek Bogdal's NMR Tutor at Imperial College
Dr. Hornak's The Basics of NMR
Henry Rzepa's ("Tschepa") course on NMR Spectroscopy - Principles and Applications
Koen van Aken's NMR Tutorial Pages.
Joseph Hornak's Basics of NMR
David Hewitt's Organic Spectroscopy Tutorial on NMR with many good problems.
Wilson's Nuclear Magnetic Resonance.
Loeppky's Overview of NMR for the Undergraduate Student
Theoretical Principles of Nuclear Magnetic Resonance Spectroscopy
Get your own PC program for
Spectra Simulation
VARIAN is one of the major producers of NMR instrumentation.
BRUKER is another one of the major producers of NMR instrumentation.
The University of Frankfurt's portal to NMR Sites
Take a peak at the Future: Quantum Computing with Molecules

Ethers
The
Dioxins R Us Home Page

Epoxides
CHIREX on
Asymmetric Epoxidation

Mercaptanes
What is a mercaptane?
Mercaptanes in Natural Gas

Diels-Alder Reactions
Morrison and Boyd's discussion of orbital symmetry in the
Diels-Alder Reaction
Jeff Gosper's Simulations of Diels-Alder Reactions
Interactive model of a Diels Alder Reaction

Ultraviolet & Visible Light and UV/Vis Spectroscopy
Interaction of Radiation with an Atom
The UV Card - A credit card size device that indicates the ultraviolet light intensity.

Benzene
The
Benzene Homepage at Queen's University.
Spectacular QuickTime movies on the Molecular Dynamics of Benzene.
Nitroglycerin - An explosive and a lot more ...

Polycyclic Aromatic Hydrocarbons
Polycyclic Aromatic Hydrocarbons (PAHs) Data Base
Dr. Wathen's page on PAHs and Cancer
Chemical exposure: PAHs in steel workers

Anilines & Smoking
Glaser's "Chemistry is in the News" to accompany Chapter 17
Tobacco-Specific N-Nitrosamines: Recent Adcvances

Phenols
The "goodies" in marijuana: The phenol
THC or tetrahydrocannabinol
Lake Environmental Software's Phenol Toxicity

Aldehydes and Ketones
The Organic Chemistry Virtual Tutor's Shockwave animation of the
Aldehyes and Ketones
Young's Organic Chemistry OnLine: Aldehydes and Ketones.
Ralph Logan's Aldehydes and Ketones
Testing for ketones in urine: The Ketone Pad
High Blood Glucose with Ketones in the Blood Ketones in the Blood(Diabetic Ketoacidosis, DKA)
Read about acetone in Sweet Poison: The Dangers of Perfume

Amines
Glaser's "Chemistry is in the News" to accompany Chapter 19
Methamphetamine - Abuse and Addition
The smell of amines: Blowing the theory of how we smell
Amines and Stinking Flowers
About.com's Cadaverine and Putrescine

Alkaloids
A portal to
LSD ... even a recipe ...
The Addition Research Foundation's take on Cocaine
The Koch Crime Institute on Methamphetamine
Don't even get started! Drug Prevention

Carboxylic Acids
Analysis of
carboxylic acids in wine

Carboxylic Acid Esters
An overview of
carboxylic acid derivatives
Ken Flieger's Aspirin: A New Look at an Old Drug

Carboxylic Acid Amides
A tutorial on the
beta-Lactam Antibiotics

Carboxylic Acid Halides

Carboxylic Acid Anhydrides

Condensation Reactions
Dr. Sweeting's
reactions of enolates
Mechanism of the Claisen-Schmidt condensation (Mixed aldol condensation.)
Retrosynthesis of 1,5-diphenyl-1,4-pentadien-3-one

Carbohydrates
Carbohydrate VirtualText Tutorial
Nomenclature of Carbohydrates
Carbohydrate Chemistry online, a licley illustrated tutorial
Jon Maber's Monocsaccharide Browser
Dr. Paul's Biochemical Gallery on Carbohydrates
Carbohydrates - A Biochemistry Review
Indiana Institute for Molecular and Cellular Biology: Glycolysis
The University of Utrecht's Fructan Page
Shodex's web site on Chromatographic Separations and Analysis of various sugars.
The Diabetes Monitor: A portal to all aspects of diabetes.
Diabetics's use of
Benedict's Test for Glucose
Mead Johnson Nutritionals' Living with Diabetes
The American Heart Association on Carbohydrates and Sugars
Sugars International
Sugars and Sweeteners

Nucleic Acids
Dr. Paul's Biochemical Gallery on Nucleic Acids.
IMB's Nucleic Acids Nomenclature and Structure
DNA Structure - An Interactive Animated Nonlinear Tutorial by Eric Martz
The DNA site of the University of Massachussetts
U.S. Dept. of Energy's The Human Genome Program Information
NIH's The National Human Genome Research Institute
Cancer Chemotherapy
National Cancer Institute
Canver Drug Manual

Amino Acids
Petrilli's
Primer on Amino Acids, Peptides and Proteins
The amino acid gallery of the University of Berlin.
The amino acid gallery of the Department of Biological Sciences at UC Davis.
Birkbeck's Introduction to Amino Acids
Yale University's Metabolic Database on amino acid synthesis and degradation.
Epilepsy and GABA (gamma-amino butyric acid)

Peptides
Peptide Models
Peptide Folding by Computer Simulation
Advanced Bioconcepts: Biologically active fluopeptides - a visible advantage.

Proteins
Molecules R US: The NIH's portal to the Protein Data Bank (PDB).
Inhibitors of HIV Protease: An Introduction to Carbonyl Chemistry
Erik Martz's Protein Morpher
The PredictProtein server
The Prion Protein and transmissible spongiform encephalopathies (TSEs)

Lipids
Journal of Lipid Research Home Page
Chemistry of Lipids
Lipids, Fats and Soaps
Dr. Elson Haas' dietary pages on Lipids: Fats and Oils
About.com on Omega-3 Fatty Acids
About.com on Conjugated Linoleic Acid
About.com on Fats and Fat Substitutes

Detergents
The History of Detergents on the Kiwi Web
The home pages of
The Soap and Detergent Association

Steroids
Molecular models of some
steroid hormones
PREMARIN: Cycle of Cruelty ("premarin" stands for "pregnant mares' urine")
Deadly Toxins in Potato: Chaconine and Solanine
Alan Tonge's STEROIDS - Structure and Chemical Reactivity

Polymers
University of Missouri-Rolla
Polymer Chemistry Hypertext
University of Illinois, Materials Science and Engineering's web page on Polymers
Polymer Data Resources
Polymers & Liquid Crystals. The PLC Page at Case Western Reserve University.
Drexel University's Department of Materials Engineering on Nylon.
San Diego Plastics, Inc., on polyurethane
The Macrogalleria - a cyberworld of polymer fun. A Must-See!
Chrissy Martin's What's all this talk about polymers?"
Greenpeace on PVC - Poison Polymer
About.com Chemistry on Dendrimers