Sentence examples for authentic standard from inspiring English sources

Quantification of estradiol 3-O-glucuronide was performed by comparing the HPLC peak height to that of the authentic standard.

Purity of the product was identical to an authentic standard as judged by LC-MS and NMR.

The authentic standard 5 was synthesized from 17β-estradiol by published procedures in 5 steps with 40% overall chemical yield.

Comparison of the retention times of the newly yielded peak with that of authentic standard indicated that the fatty acid was ALA.

(B) The authentic standard spectrum of inosine.

(B) The authentic standard spectrum of equol, later permitted the identification of the unknown.

Figure 2 Authentic standard of TMA salt and β-alanine betaine ester detected by capillary electrophoresis.

QC measurements are randomized and followed by authentic standard mixtures of 80 metabolites for establishing quantification reference points.

Pesticide residue (chlorpyrifos) was identified from its retention time appeared in grape extract chromatogram (Fig. 2) and confirmed by comparison with authentic standard.

The C4-position for the hydroxylation was assumed because of the similarities with the reaction of DCF, though no authentic standard was available.

Consequently new spectral libraries can be created automatically; the method is not limited by the availability of a chemical library of authentic standard spectra.