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Natural Products
Eriocaulon buergerianum

Eriocaulon buergerianum Koern. is the botanical source for the Chinese herbal medicine Gu-Jing-Cao. Other Eriocaulon species are also used as the same herb in local areas and are difficult to be differentiated. In order to improve the quality control of Gu-Jing-Cao, chemical constituents of E. buergerianum and adulterating species were analyzed by high-performance liquid chromatography with diode array detection and electrospray ionization tandem mass spectrometry (HPLC-DAD-ESI-MS(n)). The 70% methanol extracts were separated on a Zorbax SB-C(18) column and eluted with acetonitrile-water (each containing 0.1% formic acid). The compounds were identified by ion-trap mass spectrometry in both positive and negative ion modes. From E. buergerianum, E. faberi, E. sexangulare and E. cinereum, a total of 72 compounds were characterized, including 37 flavonols, 6 flavones, 4 isoflavones, 6 xanthones, 14 naphthopyranones, 3 phenolic acids, and 2 other flavonoids. Chemical variation of these four species were studied at three tiers, HPLC fingerprinting, quantitation of six major flavonoids.

Eriocaulon buergerianum
Research products of Eriocaulon buergerianum
Catalog Product Name CAS Number Manual
CFN99272Quercetin117-39-5  PDF
CFN99491Hispidulin1447-88-7  PDF
CFN90892Hispidulin 7-O-neohesperidoside156186-00-4  PDF
CFN99716Palmitic acid57-10-3  PDF
CFN927066-Methoxyluteolin520-11-6  PDF
CFN90386Jaceosidin18085-97-7  PDF
CFN90438Nepetin-7-glucoside569-90-4  PDF
CFN99642Rutin153-18-4  PDF
CFN975683,4-Dihydroxybenzoic acid99-50-3  PDF
CFN994503,4-Dihydroxybenzaldehyde139-85-5  PDF
CFN99331Vanillic acid121-34-6  PDF
CFN90463Vanillin121-33-5  PDF
CFN90358Isovanillin621-59-0  PDF
CFN99158Ferulic acid1135-24-6  PDF
CFN99190Caffeic acid331-39-5  PDF
CFN98713Daucosterol474-58-8  PDF
CFN99916Beta-Sitosterol83-46-5  PDF
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