THE identification of organic substances—a matter of obvious interest and importance—stands in a somewhat different category from that of inorganic compounds, for we are not concerned here so much ...

The NIST Mass Spectral Library has expanded to include new human and plant metabolites, variants of fentanyl and other synthetic drugs. The National Institute of Standards and Technology (NIST) has ...

THE usual way of identifying organic compounds consists in preparing a crystalline derivative and determining its melting temperature. Such preparation requires at least 50 mgm. of material. Compounds ...

Students learn to define and identify organic compounds. Chemical Reactions: Writing Molecular Formulas and an Introduction to Organic Molecules: Students learn to define and identify organic ...

Russian researchers have explained why scientists studying crude oil and celestial chemistry—as well as certain down-to-earth matters—frequently come across some molecules incorporating carbon, ...

Headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry HS-SPME-GC-MS was used by researchers ...

Organic chemistry is the study of the structure, properties, composition, reactions, and preparation of carbon-containing compounds. Most organic compounds contain carbon and hydrogen, but they may ...

NIST research chemist Kelly Telu injects a sample into a mass spectrometer, a laboratory instrument that scientists use to identify unknown chemical compounds. (M. Delorme/NIST) The National Institute ...

This module has been designed to introduce second-year organic chemistry students to the concepts of stereochemistry through the lens of the World Health Organization’s Model List of Essential ...