Fatty acid methyl esters were identified by comparison of retention time with those of reference compounds (Supelco) and by gas chromatography mass spectrometry (GC MS).
Leinweber, P. et al. Nitrogen K-edge XANES an overview of reference compounds used to identify 'unknown' organic nitrogen in environmental samples.
By combining measurements of reference compounds with graphite electrodes cycled in different electrolytes and under different conditions, knowledge of the solid electrolyte interphase (SEI) chemistry can be obtained.
As shown here using a set of reference compounds, STXM-based XAS allows directly estimating N/C ratios of organics without using any standard with errors as low as 0.007.
The study of the redox and optical properties of these chromophores and of reference compounds without dicyanovinyl units allows us correlate the electronic properties to the presence of the electron withdrawing groups and the molecular conformation.
Compounds 16 and 17 were the most active ligands (IC50 values of 83 nM and 71 nM, respectively) and they showed a potency close to that of reference compounds ifenprodil (1, IC50 = 47 nM) and 3 (IC50 = 25 nM).
The ability of the various K_PY/amine couple in the radical polymerization of an acrylate (up to 75% conversion) and the different K_PY/diphenyliodonium salt system in the cationic polymerization of an epoxide (up to 70% conversion) is often better than that of reference compounds.
Among them, 1- 4-fluorophenyl -2-ethyl-3- thiomorpholin-4-yl)methyl-5-(4-methylphenyl)-1- 4-fluorophenyl -2-ethyl-3- thiomorpholin-4-yl, with a minimum inhibitory concentration (MIC, expressed as μg/mL) and a protection index (PI) better than or comparable to those of reference compounds.
Solutions of a defined concentration of reference compounds were tested.
The intensities of reference compounds were normalized by their intensities detected on day 1.
The contents of reference compounds from 47 Rhodiola samples were listed in Table 1S.
