Baltes, Werner published the artcileModel reactions on roast aroma formation. V. Mass spectrometric identification of pyridines, oxazoles, and carbocyclic compounds from the reaction of serine and threonine with sucrose under the conditions of coffee roasting, Application of 4,5-Dimethyloxazole, the publication is Zeitschrift fuer Lebensmittel-Untersuchung und -Forschung (1987), 185(1), 5-9, database is CAplus.
From the reaction of serine, threonine and sucrose under the conditions of coffee roasting, 33 pyridines, 20 oxazoles, and 12 carbocyclic compounds, among others, were identified in the volatile fraction. Their mass spectra and retention indexes are reported and the reaction products were compared with those formed by roasting coffee under the same conditions.
Zeitschrift fuer Lebensmittel-Untersuchung und -Forschung published new progress about 20662-83-3. 20662-83-3 belongs to oxazolidine, auxiliary class Oxazole, name is 4,5-Dimethyloxazole, and the molecular formula is C5H7NO, Application of 4,5-Dimethyloxazole.
Referemce:
https://en.wikipedia.org/wiki/Oxazolidine,
Oxazolidine | C3H7NO – PubChem