Results 111 to 120 of about 5,021 (275)

Cycloaddition Reactions of C-Nitrosocarbonyl Compounds in Asymmetric Synthesis [PDF]

open access: yes, 1989
Oxidation of (+/-)-mandelohydroxamic acid (328a) with periodate gave the corresponding transient C. -nitrosocarbonyl compound (329a) which was trapped at
Nazeer, Muhammad
core  

Review of Heroin Metabolites and Alkaloids Detected in Postmortem Toxicological Analysis

open access: yesAdli Tıp Bülteni
Objective: In toxicological analyses, a variety of alkaloids and metabolites can be detected in addition to the main drugs or stimulants. The aim of this study is to discuss the diversity, frequency and characteristics of heroin metabolites and alkaloids
Abdülkadir İzci   +3 more
doaj   +1 more source

A survey of thermodynamic properties of the compounds of the element CHNOPS Progress report, 1 Mar. - 30 Jun. 1968 [PDF]

open access: yes
Thermodynamic property data tables for CHNOPS compounds and heats of combustion and formation for organic compounds of biological ...
Domalski, E. S.   +2 more
core   +1 more source

Studies of alkaloid metabolism in papaver somniferum l [PDF]

open access: yes, 1992
Six P. somniferum L. cultivars were investigated for quantitative analysis of their alkaloid contents during plant development in the attempt to screen plants with high yields in noscapine and to determine what losses in alkaloid occurred as a result of ...
Pham, Thi Danh Thom
core  

Opium use and risk of mortality from digestive diseases: A prospective cohort study

open access: yes, 2013
Objectives:Opium use, particularly in low doses, is a common practice among adults in northeastern Iran. We aimed to investigate the association between opium use and subsequent mortality from disorders of the digestive tract.Methods:We used data from ...
  +80 more
core   +1 more source

Application of Conventional and New Biotechnological Approaches for Improving of Morphinane Alkaloids Production

open access: yesJournal of Medicinal Plants, 2010
More than 12,000 alkaloids are known in plants, mostly used as medicine with a world market value of about 4 billion US$. Opium poppy, Papaver somniferum, is the most important economic source of morphinane alkaloids such as morphine, codeine, thebaine ...
E Dehghan   +3 more
doaj  

Determination of relative response factors of the opium alkaloids with HPLC-DAD [PDF]

open access: yesMakedonsko Farmacevtski Bilten, 2012
In this work, a convenient method for determination of relative UV response factors (RRFs) of morphine, codeine, thebaine, oripavine, noscapine and papaverine by high performance liquid chromatography (HPLC) equipped with a diode array detector (DAD) was
Jelena Acevska   +5 more
doaj  

Home - About - Disclaimer - Privacy