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52![HETEROCYCLES IN ORGANIC CHEMISTRY A HETEROCYCLE IN ORGANIC CHEMISTRY IS A RING OF CONNECTED ATOMS, WHERE ONE OR MORE OF THE ATOMS IN THE RING ARE ELEMENTS DIFFERENT FROM CARBON. HETEROCYCLES WITH OXYGEN, NITROGEN, AND SU HETEROCYCLES IN ORGANIC CHEMISTRY A HETEROCYCLE IN ORGANIC CHEMISTRY IS A RING OF CONNECTED ATOMS, WHERE ONE OR MORE OF THE ATOMS IN THE RING ARE ELEMENTS DIFFERENT FROM CARBON. HETEROCYCLES WITH OXYGEN, NITROGEN, AND SU](https://www.pdfsearch.io/img/0cd98267564f62b8a8564ccc5af8618d.jpg) | Add to Reading ListSource URL: www.compoundchem.comLanguage: English - Date: 2014-08-07 13:29:11
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54![](https://www.pdfsearch.io/img/d8cf1bb4c0d498b831599e55bb7a8e30.jpg) | Add to Reading ListSource URL: koppa.jyu.fiLanguage: English |
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55![](https://www.pdfsearch.io/img/9451735b4c8c74d0651c3a9d18750e99.jpg) | Add to Reading ListSource URL: media.wiley.comLanguage: English - Date: 2011-03-22 07:11:38
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56![](https://www.pdfsearch.io/img/fa3e967419c7c8378afb3b6c8d2b1691.jpg) | Add to Reading ListSource URL: media.wiley.comLanguage: English - Date: 2013-08-23 19:12:18
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57![H chemical shifts in NMR. Part 18.1 Ring currents and -electron effects in hetero-aromatics Raymond J. Abraham * and Matthew Reid Chemistry Department, The University of Liverpool, PO Box 147, Liverpool, UK L69 3BX. E- H chemical shifts in NMR. Part 18.1 Ring currents and -electron effects in hetero-aromatics Raymond J. Abraham * and Matthew Reid Chemistry Department, The University of Liverpool, PO Box 147, Liverpool, UK L69 3BX. E-](https://www.pdfsearch.io/img/804a44f44f54b2d4903fad14672154f9.jpg) | Add to Reading ListSource URL: www.modgraph.co.ukLanguage: English - Date: 2012-01-10 04:05:11
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58![UKC Key, Section C; Chemistry, Matallurg UKC Key, Section C; Chemistry, Matallurg](https://www.pdfsearch.io/img/901236cac6c776ece907c980f8b06657.jpg) | Add to Reading ListSource URL: www.ipo.gov.ukLanguage: English - Date: 2008-03-28 09:43:10
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59![UKC Key, Section C; Chemistry, Matallurgy UKC Key, Section C; Chemistry, Matallurgy](https://www.pdfsearch.io/img/f55b831f13eed72ae2b4a1af9a3dde06.jpg) | Add to Reading ListSource URL: www.ipo.gov.ukLanguage: English - Date: 2008-03-28 09:44:55
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60![www.novochemy.com [removed[removed][removed]24h) Catalog Products[removed]compounds up to May[removed]We are mainly offering different heterocyclic compounds with Mol. Weight between[removed]And, www.novochemy.com [removed[removed][removed]24h) Catalog Products[removed]compounds up to May[removed]We are mainly offering different heterocyclic compounds with Mol. Weight between[removed]And,](https://www.pdfsearch.io/img/fdc5b8a10fc608a37b50a19e9519d98a.jpg) | Add to Reading ListSource URL: www.namiki-s.co.jpLanguage: English - Date: 2014-05-22 05:59:47
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