Preprint Communication Version 1 Preserved in Portico This version is not peer-reviewed

Complete Assignment of the 1H and 13C NMR Spectra of Carthamin Potassium Salt Isolated from Carthamus Tinctorius L.

Version 1 : Received: 22 July 2021 / Approved: 9 August 2021 / Online: 9 August 2021 (12:49:31 CEST)

A peer-reviewed article of this Preprint also exists.

Sasaki, M.; Takahashi, K. Complete Assignment of the 1H and 13C NMR Spectra of Carthamin Potassium Salt Isolated from Carthamus tinctorius L. Molecules 2021, 26, 4953. Sasaki, M.; Takahashi, K. Complete Assignment of the 1H and 13C NMR Spectra of Carthamin Potassium Salt Isolated from Carthamus tinctorius L. Molecules 2021, 26, 4953.

Journal reference: Molecules 2021, 26, 4953
DOI: 10.3390/molecules26164953

Abstract

Carthamin potassium salt isolated from Carthamus tinctorius L. was purified by an improved traditional Japanese method, without using column chromatography. The 1H and 13C nuclear magnetic resonance (NMR) signals of the pure product were fully assigned using one- and two-dimensional NMR spectroscopy, while the high purity of the potassium salt and deprotonation at the 3’ position of carthamin were confirmed by atomic adsorption spectroscopy and nano-electrospray ionization mass spectrometry.

Keywords

carthamin-3’potassium salt, green metallic luster, fermented safflower petal tablet

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