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Chemistry requires an understanding of molecular structure, knowledge of molecular reactivity, and the creativity to combine them in novel situations. A synthetic chemist must be able to translate a two-dimensional drawing into a three-dimensional mental image. This three-dimensional image is then unwrapped and divided into key intermediates, each of which will be unwrapped and divided in turn. We cannot see with our eyes the molecules we study. Therefore, we bridge the gap between ordinary vision and visual imagination with models: physical models which embody the metaphorical models.
Synthesis (very nice instructional course)
Welcome to WebSpectra - This site was established to provide chemistry students with a library of spectroscopy problems. Interpretation of spectra is a technique that requires practice - this site provides 1 H NMR and 13 C NMR, DEPT, COSY and IR spectra of various compounds for students to interpret. Hopefully, these problems will provide a useful resource to better understand spectroscopy.
UCLA Problems in NMR and IR Spectroscopy
NSTA Web Seminars are free, 90-minute, live professional development experiences that use online learning technologies to allow participants to interact with nationally acclaimed experts, NSTA Press authors, and scientists, engineers, and education specialists from NSTA partner organizations. Register Today! Seminar participants earn 100 Learning Center activity points , an NSTA SciGuide , and a certificate of participation for attending and completing the evaluation form at the end of the program.
NSTA Learning Center
In chemistry , especially biochemistry , a fatty acid is a carboxylic acid with a long aliphatic tail ( chain ), which is either saturated or unsaturated . Most naturally occurring fatty acids have a chain of an even number of carbon atoms, from 4 to 28. [ 1 ] Fatty acids are usually derived from triglycerides or phospholipids . When they are not attached to other molecules, they are known as "free" fatty acids. Fatty acids are important sources of fuel because, metabolized, they yield large quantities of ATP . Many cell types can use either glucose or fatty acids for this purpose.
Fatty Acids
"Sustainability efforts in institutions across the world have become mainstream and ubiquitous. Although much attention and resources are being spent on such activities, there does not exist a universal understanding of how sustainability can be truly measured and tracked to determine the actual success of any "sustainability endeavor". The iSUSTAIN™ Index provides the user with a CREDIBLE and QUANTIFIABLE assessment of the relative sustainability of a material process. This tool is useful to retrospectively analyze an existing process or help design a new process with a focus on sustainability.
iSUSTAIN Green Chemistry Index
Drugs.com
TUESDAY, May 22 -- New research suggests that young asthma patients who use drugs known as inhaled anticholinergics -- such as ipratropium [Atrovent] -- could be more likely than others to suffer from potentially dangerous irregular heartbeat. However, the increased risk was not seen for some types of anticholinergics.
PyMOL is an open-source, user-sponsored, molecular visualization system created by Warren Lyford DeLano and commercialized by DeLano Scientific LLC, which is a private software company dedicated to creating useful tools that become universally accessible to scientific and educational communities. It can produce high quality 3D images of small molecules and biological macromolecules , such as proteins . According to the author, almost a quarter of all published images of 3D protein structures in the scientific literature were made [ when? ] using PyMOL. [ citation needed ] PyMOL is one of a few open source visualization tools available for use in structural biology . The Py portion of the software 's name refers to the fact that it extends, and is extensible by the Python programming language .
PyMOL - Wiki