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Enantiomeric ratios: Why so many notations?

Maria E Tiritan1, Carla Fernandes2, Alexandra S Maia3

  • 1CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde (IINFACTS), Rua Central de Gandra, 1317, 4585-116, Gandra PRD, Portugal; Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia da Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal; Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208, Matosinhos, Portugal.

Journal of Chromatography. A
|July 21, 2018
PubMed
Summary
This summary is machine-generated.

Accurate quantification of enantiomers is crucial across many scientific fields. This study proposes standardizing notations using enantiomeric ratio (e.r.%) for simplified and comparable results in enantiomer analysis.

Keywords:
ChiralityEnantiomeric excessEnantiomeric fractionEnantiomeric ratioEnantiomers

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Area of Science:

  • Analytical Chemistry
  • Chiral Separations
  • Chemical Metrology

Background:

  • Accurate enantiomer quantification is vital for pharmacokinetics, synthesis, natural product analysis, food authentication, biodegradation, environmental risk assessment, and forensic science.
  • Enantioselective chromatography is the primary method for assessing enantiomeric mixture composition.
  • Current notations for enantiomeric ratios are inconsistent, hindering data comparison and reproducibility.

Purpose of the Study:

  • To critically review existing notations for expressing enantiomeric ratios.
  • To highlight the challenges posed by varied notations in scientific data comparison.
  • To propose a standardized notation for simplified and consistent reporting of enantiomeric data.

Main Methods:

  • Critical discussion of currently employed notations for enantiomeric ratios.
  • Exemplification of notation systems with applications across diverse scientific fields.
  • Evaluation of the advantages and disadvantages of selected notation systems.

Main Results:

  • Existing notations for enantiomeric ratios present challenges for data comparison and interpretation.
  • Different fields utilize varied systems, leading to potential confusion and errors.
  • The manuscript identifies the need for a unified approach to reporting enantiomeric data.

Conclusions:

  • The study advocates for the adoption of enantiomeric ratio (e.r.%) as a standardized notation.
  • Standardization simplifies reporting and enhances data comparability in enantiomer analysis.
  • Proposed standardization facilitates more reliable scientific communication and application across disciplines.