http://www.cem.com/ CEM Corporation, a private company based in Matthews, North Carolina, is the leading provider of microwave laboratory instrumentation. The Company has subsidiaries in the United Kingdom, Germany, Italy and France, as well as a global network of distributors. CEM designs and manufactures systems for life sciences, synthetic chemistry, analytical chemistry, and processing plants worldwide. The Company's products are used in many industries including pharmaceutical, biotech, chemical, environmental, and food processing, as well as for academic research. en-gb All content Copyright 2009 CEM CorporationCEM is an official GSA Supplier | ISO certification since 1994 | Privacy Policy | RSS Feeds rich.davis@nospam.com (Admin) rich.davis@nospam.com (Admin) Thu, 09 Sep 2010 03:27:50 -0600 Thu, 09 Sep 2010 03:27:50 -0600 http://backend.userland.com/rss e107 (http://e107.org) 60 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php? Wed, 31 Dec 1969 17:00:00 -0700 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php? http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* keller.barnhardt@nospam.com (Keller) Tue, 09 Mar 2010 02:19:46 -0700 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*
Welcome to CEM's newest feature- a Microwave Synthesis Forum exclusively for our colleagues in the acdemic world to discuss real world applications of microwave enhanced chemistry in teaching and research! If you would like, you can introduce yourself here to our online community. Alternatively, feel free to jump right into the discussions by posting in a thread that you create, or an existing one that catches your interest!

Let the collaboration begin!]]> Ashley.Lewis@nospam.com (Ashley) Thu, 11 Mar 2010 03:03:45 -0700 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*
I was curious, how many of you are using the Organic Chemistry curriculum in your teaching labs now? Are you using the curriculum as written, or are you creating your own experiments using the provided experiments as guidelines?  Please answer the poll below- and feel free to elaborate in the thread! (ie: which experiments do you use, how/why you deviate from the written experiments)]]> Ashley.Lewis@nospam.com (Ashley) Thu, 11 Mar 2010 04:24:01 -0700 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* Ashley.Lewis@nospam.com (Ashley) Thu, 11 Mar 2010 04:32:49 -0700 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*
Have any of you developed any Inorganic reactions you would like to share? If so, please do! Also feel free to share how you incorporated these labs into your cirrculum.]]> Ashley.Lewis@nospam.com (Ashley) Thu, 11 Mar 2010 04:42:32 -0700 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* nicholas.leadbeater@nospam.com (Nicholas Leadbeater) Thu, 18 Mar 2010 09:23:16 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*
Please feel free to start a topic to discuss any question you have, or respond to another thread with advice and insight.  Our goal is to foster open discussion that will allow everyone to share their experiences and learn from each other about all aspects of microwave peptide synthesis.]]> eric.williamson@nospam.com (Eric) Wed, 21 Apr 2010 14:21:30 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*
Aaron]]> reynolds@nospam.com (drajreynolds) Wed, 21 Apr 2010 14:39:03 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*
For acids, there's always Wang, and we've had success with CLEAR and NovaSYN TGA.  For amides, we've seen great purity from PAL-PEG PS and Rink Amide MBHA.

Does anyone have a favorite resin they've gotten good results with?]]> eric.williamson@nospam.com (Eric) Thu, 22 Apr 2010 09:01:52 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*
Unfortunately the price for Liberty 1 is a lot lower and that has already influenced our CFO not to buy the 12-channel-system.

I am wondering wether anybody has experience with the half-life-time of the reaction vessels on Liberty 1. In the past we often had problems with leakages of the reaction vessel - as we do not open or even touch it anymore these problems are gone now. In case one has to open it very often I can imagine that these problems with leakages of the vessel become an issue again.

Any experience with that?

Lex]]> arybka@nospam.com (Lex Luger) Thu, 22 Apr 2010 20:05:55 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*
Thanks in advance for any help.

Chris]]> c.welch@nospam.com (ChrisW) Fri, 23 Apr 2010 01:56:05 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* Cheers,
Dan]]> mayodj@nospam.com (D. Mayo) Tue, 27 Apr 2010 05:39:55 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* i joined a group having 12 channel machine. i wonder how many residues i can go for within one peptide chain? and what is the protocol i should follow?

thanks]]> ahmedshaheen75@nospam.com (shaheen) Mon, 10 May 2010 05:45:24 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* eric.williamson@nospam.com (Eric) Fri, 30 Apr 2010 02:03:53 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*
i notice during my calculation using pepDriver software calculator that no mater what the scale of my synthesis, still the concentration of the activator at 0.5 M and aa at 0.2M. i wonder if this normal or i am missing something during calculation. how the machine adjust the amount of activator and aa for different scales? and if the machine does this, should the concentration of high scale become more diluted than the low one??]]> ahmedshaheen75@nospam.com (shaheen) Mon, 17 May 2010 02:21:40 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*
The service technician will not be able to be here untill another 2 weeks, so any help is appriciated. Erik]]> holm@nospam.com (Erik holm Nielsen) Thu, 03 Jun 2010 08:20:01 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* I have heard a lot of good things about the Chemmatrix resins, so now I've ordered some.
However I'm concerned with the swelling of the Chemmatrix resin, as you want the resin to be completely soluted during the various steps. So as the swelling of the Chemmatrix resin is around twice as big as for PS resin, I'm wondering whether it is necessary to take any precautions when using this resin?

In advance thanks
Erik]]> holm@nospam.com (Erik holm Nielsen) Sun, 06 Jun 2010 20:39:56 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* lanpip2001@nospam.com (lanpip) Wed, 09 Jun 2010 03:51:26 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* I just downloaded the latest version of the usermanual for the 12C Liberty, and I just had a glance at it. I seem to recall that somewhere it says that the resin mesh size to be used with the LIberty should be 100-200. Can anybody confirm this.

In advance thanks
Erik]]> holm@nospam.com (Erik holm Nielsen) Thu, 03 Jun 2010 21:22:58 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* As we are several users of the CEM-liberty, it would be a great if everyone could have their personal folder containg their own methods. Is this possible and how about subfolders in the sequence and cycles editor, is that possible?


In advance thanks
Erik]]> holm@nospam.com (Erik holm Nielsen) Sun, 20 Jun 2010 20:45:36 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* s3163715@nospam.com (Dean Sheard) Tue, 31 Aug 2010 18:43:17 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?* http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*
david gabb]]> dagabb@nospam.com (croningp) Wed, 08 Sep 2010 03:26:01 -0600 http://www.cem.com/e107_plugins/forum/forum_viewtopic.php?*