包装 250 g in poly bottle 5 g in glass bottle Other Notes Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. C80857.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin. Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. C80857.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.
A monocarboxylic acid that consists of acrylic acid bearing a phenyl substituent at the 3-position. It is found in Cinnamomum cassia.
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• Heating with excess thionyl chloride and a catalytic amount of pyridine gives a benzo[b]thiophene derivative, formed by electrophilic addition of thionyl chloride across the double bond of cinnamoyl chloride, Pummerer rearrangement of the resulting sulfinyl chloride and final cyclization. ɑ-Chlorocinnamoyl chloride is formed as a by-product by elimination of SCl2: J. Org. Chem., 40, 3037 (1975):
• Under similar conditions, 3-phenylpropionic acid gave the same products in lower yield; the reaction was thought to occur via an initial ɑ-enolization of the acid chloride: Tetrahedron Lett., 5149 (1968).